Invaas Tanjent Kalkyuleta

Invaas Tanjent Kalkyuleta

Wan inverse tangent kalkuleita fiin di aangl we tangent ikwal tu giiven namba. Enta a desimal, opposite an adjacent saidz a wan rait traiangel or wan (x, y) point fi get tan⁻¹(x) ina digri, reedians an 7 moa yunit, wid eksakt valyuz, steps an a graf fi traiangel, slops, phase aangl an beering.

Weh a Inverse Tangent?

Invairamental tangent a di fongshan we rituon di anggl uufa tangent iikual tu wah gien nomba. Invairamental tangent rait az [tan⁻¹(x), arctan(x) ar atan(x), ah it rivoers di tangent fongshan:: tan(45°) = 1, so tan⁻¹(1) = 45°.

Inverse tangent (arctangent) a one a di 6 inverse trigonometric functions inna trigonometry: arcsin, arccos, arctan, arccsc, arcsec an arccot. Arctangent accept every real numba an return a principal value between −90° an 90° (−π/2 an π/2 radians).

Inna a right triangle, di tangent a one angle θ equal di opposite side divided by di adjacent side. Di inverse tangent tek dat deh opposite/adjacent ratio an return di angle θ. Inna algebra, tan⁻¹ solve equations such as tan θ = 2: θ = tan⁻¹(2) = 63.43°.

  • Input: any real numba, such as a ratio, a slope or a decimal.
  • Output: an angle in degrees or radians.
  • Range: −90° < θ < 90°, or −π/2 < θ < π/2.

From ratio to angle

How fi calculate Inverse Tangent?

Fi calculate inverse tangent, divide di opposite side by di adjacent side an apply tan⁻¹ to di result. Di inverse tangent calculation have 3 steps:

  1. Divide di opposite side by di adjacent side: x = opposite / adjacent.
  2. Apply di inverse tangent: θ = tan⁻¹(x), inna radians.
  3. Convert di angle to degrees, if needed: degrees = radians × 180/π.

Opposite = 3 an adjacent = 4 gi x = 0.75. tan⁻¹(0.75) = 0.6435 rad = 36.87°. Di hypotenuse fala fram di Pythagorean theorem: √(3² + 4²) = 5.

Two more inverse tangent examples: tan⁻¹(0) = 0° an tan⁻¹(1/3) = 18.43° (0.3218 rad).

Work it out wan step at a time

How fi Use Dis Inverse Tangent Calculator?

Fi use dis inverse tangent calculator, choose an input method, type di value an read di angle. Using di tan-1 calculator tek 5 steps:

  1. Choose di input: Decimal / x, Opp / Adj (opposite / adjacent) or Point (x, y).
  2. Enter di value: a decimal, a fraction such as 3/4 or an expression such as 1/√3.
  3. Pick 1 of 9 result units, including degrees, radians, gradians an minutes or seconds of arc.
  4. Set di rounding: integer, tenths, hundredths, thousandths or up to 15 decimal places fi maximum accuracy.
  5. Read di angle, di exact value, di step-by-step solution an di diagram. Switch on Show labels fi name di triangle sides.

Dis arc tan calculator update di result as yuh type. Di Point (x, y) input yuuz atan2(y, x), so di arctan kialkueta rituon di ful anggl ina aal 4 kwaadrant, frah −180° tu 180°.

Try out wan example

Each button fill di calculator above an scroll to di result.

Di Formula fi Inverse Tangent

Di inverse tangent formula is θ = tan⁻¹(di said weh deh akras fram di angl / di said weh deh bsaid di angl).

θ = tan⁻¹(di said weh deh akras fram di angl / di said weh deh bsaid di angl)

Di formula come fram di tangent ratio a one right triangle, tan θ = opposite / adjacent. Applying tan⁻¹ to both sides isolates di angle θ. Deh have 7 related inverse tangent formulas:

  • Coordinates: θ = atan2(y, x) fi a point (x, y).
  • Slope: θ = tan⁻¹(m), weh m = di rise / di run.
  • Complement: tan⁻¹(x) + tan⁻¹(1/x) = 90° fi x > 0.
  • Sum: tan⁻¹(a) + tan⁻¹(b) = tan⁻¹((a + b) / (1 − ab)) fi ab < 1.
  • Derivative (calculus, differentiation): d/dx tan⁻¹(x) = 1 / (1 + x²).
  • Integral (integration): ∫ tan⁻¹(x) dx = x·tan⁻¹(x) − ½·ln(1 + x²) + C.
  • Complex numbers an hyperbolic functions: tan⁻¹(z) = (i/2)·ln((i + z) / (i − z)) = −i·tanh⁻¹(iz).

Drag di triangle

Drag di blue corner, or focus it an use di arrow keys.

Inverse Tangent ina Degrees

Inverse tangent inna degrees gi di angle pan a scale fram −90° tuh 90°. Fi convert a radian result to degrees, multiply by 180/π (bout 57.2958). Dis radians to degrees conversion reads θ° = θ rad × 180/π.

xtan⁻¹(x) inna degrees
00°
0.526.57°
1/√3 (0.5774)30°
145°
√3 (1.7321)60°
263.43°

A degree split inna degrees, minutes an seconds (DMS). One degree have 60 minutes, an one minute have 60 seconds: tan⁻¹(0.75) = 36.8699° = 36° 52′ 11.6″. Fi seconds to degrees, divide di seconds dem by 3,600.

Degrees an DMS

Inverse Tangent ina Radians

Inverse tangent inna radians gi di angle as an arc length pan di unit circle, between −π/2 an π/2 (−1.5708 tuh 1.5708). Wan riedian a di anggl uufa aak pah soerkl iikual tu di riedius, ah wah ful tuon a 2π radians (360°).

Fi degrees to radians conversion, multiply di degrees by π/180. Deh have 4 inverse tangent values inna radians worth knowing:

  • tan⁻¹(1) = π/4 = 0.7854 rad
  • tan⁻¹(√3) = π/3 = 1.0472 rad
  • tan⁻¹(0.75) = 0.6435 rad
  • tan⁻¹(1/3) = 0.3218 rad

MATLAB, Excel, Python an most programming languages return atan results in radians. MATLAB use atand(x) fi degrees, an Excel wraps di result inna DEGREES().

Arc pan di unit circle

How fi Use Inverse Tangent pan a Calculator?

Fi use inverse tangent pan a scientific calculator, press di SHIFT or 2nd key, press tan, put di numba an press equals. Dem deh 4 steps:

  1. Set di angle mode: DEG fi degrees or RAD fi radians.
  2. Squeeze up SHIFT (Casio), 2nd (Texas Instruments) or INV fi reach tan⁻¹.
  3. Press tan fi open tan⁻¹( an type di numba.
  4. Press = fi shuo di angle.

Pan a Casio fx-82 or fx-991, di key sequence SHIFT, tan, 1, = returns 45 inna degree mode an 0.7853981634 inna radian mode. A wrong angle mode a di most common error: tan⁻¹(1) shuo 0.785 inna RAD mode instead a 45.

Windows Calculator an iPhone Calculator use di reverse order: type di numba fos, den press tan⁻¹.

Try out a scientific calculator

Press SHIFT, den tan, type a numba an press =.

Inverse Tangent pan Android Calculator

Fi find inverse tangent pan Android Calculator (Google Calculator), open di scientific keys, tap INV an tap tan⁻¹. Di process have 4 steps:

  1. Open Calculator an tap di expand arrow above di keypad, or turn di phone sideways.
  2. Tap DEG or RAD fi choose degrees or radians.
  3. Tap INV: sin, cos an tan chienj tu sin⁻¹, cos⁻¹ an tan⁻¹.
  4. Tap tan⁻¹, type di numba an tap =. tan⁻¹(1) shows 45.

Samsung Calculator follow di same order: open di scientific keys, tap Inv, den tap tan⁻¹.

How fi use di Android Calculator

Inverse Tangent pan iPhone Calculator

Fi find inverse tangent pan iPhone Calculator, switch to scientific mode, type di numba, tap 2nd an tap tan⁻¹. Di process have 4 steps:

  1. Open Calculator. Pan iOS 18, tap di calculator icon an choose Scientific; pan iOS 17 or earlier, turn di iPhone sideways.
  2. Check di angle mode: Rad pan di display mean radians, an di Rad/Deg key switch modes.
  3. Type di nomba, fi egzampl 1.
  4. Tap 2nd, den tan⁻¹. Di display show 45.

iPhone Calculator apply tan⁻¹ to di numba pan di screen, so di numba come fos.

How fi use di iPhone Calculator

Inverse Tangent pan Windows Calculator

Fi find inverse tangent pan Windows Calculator, switch to Scientific mode, type di numba, open Trigonometry, select 2nd an select tan⁻¹. Di process have 4 steps:

  1. Open Calculator, select di menu (☰) an choose Scientific.
  2. Select di angle mode button until it show DEG, RAD or GRAD.
  3. Type di nomba, fi egzampl 1.
  4. Open Trigonometry, select 2nd, den select tan⁻¹. Di display show 45.

Di keyboard shortcut fi tan⁻¹ inna Windows Calculator is Shift + T.

How fi use di Windows Calculator

How fi Calculate Inverse Tangent Widout a Calculator?

Fi calculate inverse tangent widout a calculator, use 1 a 3 methods: special triangles, a Taylor series or di small-angle rule.

  1. Special right triangles gi exact values. AH 45-45-90 triangle gi tan⁻¹(1) = 45°, an a 30-60-90 triangle gi tan⁻¹(1/√3) = 30° an tan⁻¹(√3) = 60°.
  2. Di Taylor series tan⁻¹(x) = x − x³/3 + x⁵/5 − x⁷/7 + … works fi |x| ≤ 1. Fi |x| > 1, use tan⁻¹(x) = π/2 − tan⁻¹(1/x) wen x > 0. Four terms gi tan⁻¹(0.5) ≈ 0.5 − 0.041667 + 0.00625 − 0.001116 = 0.463467 rad, close to di true 0.463648 rad (26.565°).
  3. Di small-angle rule tan⁻¹(x) ≈ x radians stay widin 0.4% fi |x| ≤ 0.1.

Calculators an computer chips evaluate arctangent wid di CORDIC algorithm (COordinate Rotation DIgital Computer). CORDIC rotate a vector thru fixed small angles wid shifts an additions only.

Taylor series approximation

Notation fi di Inverse a Tangent

Di invairament a tangent ab 4 kaman nuotieshan: tan⁻¹(x), arctan(x), atan(x) ah arctg(x).

Di −1 inna tan⁻¹(x) mark an inverse function, not an exponent. tan⁻¹(x) differ fram (tan x)⁻1 = 1/tan(x), weh equal cot(x). Di arc prefix come fram di unit circle: arctan(x) a di arc length, inna radians, whose tangent is x.

ToolNotation
Textbookstan⁻¹(x), arctan(x)
Excel, Google SheetsATAN(x), ATAN2(x, y)
MATLABatan(x), atand(x), atan2(y, x)
Wolfram AlphaArcTan[x]
Python, JavaScriptmath.atan(x), Math.atan(x)
Casio calculatorsSHIFT + tan

tan⁻¹(x) a nuh 1/tan(x)

Di Graph fi Inverse Tangent

Di arctan(x) graph a one increasing S-shaped curve thru di origin weh level off at two horizontal asymptotes, y = π/2 an y = −π/2. Di inverse tangent graph have 5 key features:

  • Domain: all real numbers, (−∞, ∞).
  • Range: (−π/2, π/2), or (−90°, 90°).
  • Symmetry: an odd function, symmetric bout di origin.
  • Slope: 1 at x = 0, fram di derivative 1 / (1 + x²).
  • Inflection point: (0, 0).

Di arctan graph a di reflection a di tangent graph pan (−π/2, π/2) kraas di line y = x. Di domain an range a di two graph dem swap place.

Explore di arctan(x) graph

Move di pointer ova di graph, or focus it an use di arrow keys.

Di Table fi Inverse Tangent

Di inverse tangent table list tan⁻¹(x) fi common values ​​a x inna degrees an radians. Exact values ​​come fram di special angles 15°, 30°, 45°, 60° an 75°.

Di tangent table run di ada way, fram angle to ratio: a tangent calculation gi tan(30°) = 0.5774, tan(45°) = 1 an tan(60°) = 1.7321. Large inputs approach 90°: tan⁻¹(45) = 88.73° an tan⁻¹(100) = 89.43°.

Select a row fi load di value inna di calculator. Use di rounding buttons fi switch between integer, tenths, hundredths, thousandths an maximum accuracy.

Di values fi tan⁻¹(x)

xExactDegreesRadians
000°0
0.1—5.711°0.1
0.2—11.31°0.197
0.25—14.036°0.245
2 − √3π/1215°0.262
1/3—18.435°0.322
0.4—21.801°0.381
0.5—26.565°0.464
√3/3π/630°0.524
0.6—30.964°0.54
0.7—34.992°0.611
0.75—36.87°0.644
0.8—38.66°0.675
0.9—41.987°0.733
1π/445°0.785
1.25—51.34°0.896
1.5—56.31°0.983
√3π/360°1.047
2—63.435°1.107
2 + √35π/1275°1.309
3—71.565°1.249
4—75.964°1.326
5—78.69°1.373
10—84.289°1.471
45—88.727°1.549
100—89.427°1.561
∞π/290°1.571

Finding tan⁻¹ a Negative Numbers

Fi find tan⁻¹ a negative numba dem, find tan⁻¹ a di positive value an put a minus sign in front: tan⁻¹(−x) = −tan⁻¹(x). Arctangent a one odd function, so a negative input always gi an angle between −90° an 0°.

  • tan⁻¹(−0.5) = −26.57°
  • tan⁻¹(−√3) = −60°
  • tan⁻¹(−2) = −63.43°

A negative principal value points into quadrant IV. Add 180° fi a quadrant II angle, wen di point deh left a di y-axis: atan2(1, −1) = 135°.

Weh a di tan−1 a −1?

Di tan⁻¹ af −1 is −45°, or −π/4 radians (−0.7854 rad). tan(−45°) = −1, an −45° deh inside di principal range a −90° tuh 90°. Pan a 0° tuh 360° scale, di same direction is 315°.

Positive an negative inputs

Di two point dem mirror each ada chruu di origin.

All 21 a di Inverse Calculators

Each calculator have it own inputs, step-by-step working an diagrams. Di picture pan each card show weh it compute.

Kwestiyan dem weh piipl aks nof taim

Is tan⁻¹ di same as inverse tangent?

Yes, tan⁻¹ a di same as inverse tangent. tan⁻¹(x), arctan(x) an atan(x) all name di function weh return di angle weh tangent a x. Di −1 mark an inverse function, not 1/tan(x).

Weh a di difference between tangent an inverse tangent?

Tangent tek wah anggl ah rituon wah riet, ah inchres tangent tek wah riet ah rituon wah anggl. tan(45°) = 1, an tan⁻¹(1) = 45°.

How mi fi find an angle using inverse tangent?

Fi find an angle using inverse tangent, divide di opposite side by di adjacent side an apply tan⁻¹: θ = tan⁻¹(di said weh deh akras fram di angl / di said weh deh bsaid di angl). Opposite 5 an adjacent 12 gi tan⁻¹(0.4167) = 22.62°.

Weh di inverse tangent button deh pan a calculator?

Di inverse tangent button a di secan function a di tan key pan most calculators. Squeeze up SHIFT pon Casio, 2nd pan Texas Instruments, iPhone an Windows, ar INV pon Android fi show tan⁻¹.

Mi can calculate inverse tangent in Excel?

Yes, Excel calculate inverse tangent wid di ATAN function. =ATAN(1) returns 0.7854 radians, an =DEGREES(ATAN(1)) returns 45 degrees. =ATAN2(x, y) return di full-quadrant angle a one point.

Mi can use inverse tangent fi find di angle a one slope?

Yes, inverse tangent find di angle a one slope: angle = tan⁻¹(di rise / di run). AH 10% grade, a rise of 10 m ova a run a 100 m (10 ft ova 100 ft), give tan⁻¹(0.10) = 5.71°.

Weh di meaning a inverse tangent inna a triangle?

Inna a right triangle, inverse tangent gi a acute angle fram di two legs: θ = tan⁻¹(di said weh deh akras fram di angl / di said weh deh bsaid di angl). Legs of 1 an 1 gi a 45° angle, an legs a 1 an √3 gi 30° an 60°.

How inverse tangent relate to sine an cosine?

Inverse tangent relate to sine an cosine through tan θ = sin θ / cos θ. A point (x, y) pan di unit circle have x = cos θ an y = sin θ, suh θ = tan⁻¹(y / x). Di identity tan⁻¹(x) = sin⁻¹(x / √(1 + x²)) links arctan an arcsin.

Weh di common uses a inverse tangent inna real life?

Deh have 6 common uses a inverse tangent inna real life: slope an ramp angles inna construction, roof pitch, bearing angles inna navigation systems, phase angle calculation inna electrical circuits (φ = tan⁻¹(X / R)), robot arm angles, an joystick an image direction inna software.

Weh a di inverse tangent domain?

Di inverse tangent domain a all real numba dem, (−∞, ∞). tan⁻¹(x) accept any decimal, integer or fraction, including very large values ​​such as 1,000,000.

Weh a di inverse tangent range?

Di inverse tangent range is (−π/2, π/2) in radians, or (−90°, 90°) in degrees. tan⁻¹(x) approach 90° as x grow widout limit an neva reach it.

Weh a di inverse tangent a 1?

Di inverse tangent a 1 a 45°, or π/4 radians (0.7854 rad). tan(45°) = 1 inna a 45-45-90 right triangle, weh di opposite an adjacent sides dem equal.

Weh a tan⁻¹(−1)?

tan⁻¹(−1) a −45°, or −π/4 radians (−0.7854 rad). Di negative input gi a negative angle, an −45° + 360° = 315° pan a full-circle scale.

Dis tool handle inverse sine an cosine as well?

No, dis tool calculate di inverse tangent only, as arctan an atan2. Di Opp / Adj mode shuo sin θ an cos θ a di angle. Fi ada functions, use an arcsin calculator, arccos calculator, sine calculator, cosine calculator or a full trigonometry calculator.