trigonometry Calculators
Last updated: May 2026
Sine Calculator
Calculates the sine of an angle entered in degrees, returning a value between −1 and 1.
Cosine Calculator
Calculates the cosine of an angle entered in degrees, returning a value between −1 and 1.
Tangent Calculator
Calculates the tangent of an angle entered in degrees, representing the ratio of opposite to adjacent in a right triangle (or rise/run for a slope).
Triangle Area Calculator
Calculates the area of any triangle from two sides and the included angle (the SAS formula): A = ½·a·b·sin(C).
Law of Cosines Calculator
Finds the third side of a triangle when two sides and the included angle are known, using c = √(a² + b² − 2ab·cos(C)).
Arc Length Calculator
Calculate the exact length of any circular arc by entering the radius and central angle in degrees.
Sector Area Calculator
Compute the area of a pie-slice shaped sector of a circle using its radius and central angle.
Inverse Sine Calculator
Find the angle whose sine equals a given value using the arcsine (sin⁻¹) function.
Unit Circle Calculator
Find the sine, cosine, and Pythagorean identity value for any angle on the unit circle.
Right Triangle Solver
Find the hypotenuse of a right triangle when you know the adjacent side length and the angle at the base.
Triangle Solver Calculator
Solve any triangle by entering two sides and the included angle.
Sine Wave Properties Calculator
Calculate the instantaneous value of a sine wave at any point in time given its amplitude, frequency, and phase shift.
Right Triangle Trigonometry Calculator
Find any missing side of a right triangle from one side and one angle using sine, cosine, or tangent.
Inverse Trigonometric Functions Calculator
Compute arcsine, arccosine, or arctangent of any value and return the result in degrees or radians.
Trigonometric Identity Verifier
Verify and evaluate key trigonometric identities — Pythagorean, double-angle sine, and double-angle cosine — for any angle in degrees or radians.
Bearing and Navigation Calculator
Finds the compass bearing and great-circle direction between two geographic coordinates.
Simple Harmonic Motion Calculator
Computes the instantaneous displacement, velocity, or acceleration of an oscillating object undergoing simple harmonic motion.
Polar to Rectangular Coordinate Converter
Converts coordinates between polar form (r, θ) and rectangular form (x, y).
Right Triangle Calculator
Calculates the hypotenuse, area, perimeter, and angles of a right triangle from its two legs.
Sine Cosine Tangent Calculator
Evaluates all six trigonometric functions—sin, cos, tan, csc, sec, and cot—for any angle in degrees, radians, or gradians.
Law of Sines Calculator
Find a missing side, angle, or area of any triangle using the Law of Sines.
Trigonometric Identity Calculator
Evaluate common trigonometric identities — Pythagorean, double-angle, and half-angle — at any angle.
Spherical Triangle Calculator
Solve spherical triangles on the surface of a sphere given two arc sides and the included angle.
Sine & Cosine Wave Calculator
Calculate the instantaneous value of a sine or cosine wave at any moment in time, given amplitude, frequency, and phase shift.
Inverse Trigonometric Functions Calculator
Find the angle whose sine, cosine, or tangent equals a given value.
Trigonometric Identities Calculator
Verify and compute trigonometric identities including sine/cosine sum formulas and double-angle formulas.
Oblique Triangle Solver (Law of Sines & Cosines)
Solve any non-right triangle given two angles and a side (AAS/ASA), two sides and an angle (SAS/SSA), or find its area.
Simple Harmonic Motion Calculator
Compute the displacement, velocity, or acceleration of an oscillating object in simple harmonic motion at any point in time.
Sine, Cosine, Tangent Calculator
Instantly find the sine, cosine, and tangent of any angle entered in degrees, radians, or gradians.
Law of Cosines Calculator
Calculate the unknown side of any triangle when two sides and the included angle are known, using the Law of Cosines.
Triangle Area Calculator (Trigonometry)
Compute the area of any triangle when you know two sides and the angle between them.
Inverse Trigonometric Functions Calculator
Find an unknown angle from a known trigonometric ratio using arcsine, arccosine, or arctangent.
Unit Circle Coordinates Calculator
Compute the exact (x, y) coordinates of any point on a circle given an angle and radius.
Sinusoidal Wave Function Calculator
Evaluate a sinusoidal wave function y = A·sin(B(x − C)) + D at any x value given its amplitude, frequency, phase shift, and vertical shift.