Trigonometry Calculator


The trigonometric functions have been defined using the unit circle.

Please enter value:

Radians


Sin     
Cos
Tan
Cot
Sec
Cosec
Arc Sin
Arc Cos
Arc Tan
Arc Cot
Arc Sec
Arc Cosec

Degrees

Sin
Cos
Tan
Cot
Sec
Cosec
Arc Sin
Arc Cos
Arc Tan
Arc Cot
Arc Sec
Arc Cosec

The sin(θ) is the vertical component , the cos(θ) is the horizontal coordinate of the arc endpoint.

where

Sin(q) = Opposite / Hypotenuse

Cos(q) = Adjacent / Hypotenuse

Tan(q) = Opposite / Adjacent

Triangular-pyramid

The table for basic trigonometric numbers of the most common angles as follows:

Angle sin cos tan cot sec cosec
0o 0 1 0 Not define 1 Not define
30o 1/2 √3/2 1/√3 √3 2/√3 2
45o 1/√2 1/√2 1 1 √2 √2
60o √3/2 1/2 √3 1/√3 2 2/√3
90o 1 0 Not define 0 Not define 1

Difference between radian (RED) and degrees (DEG)

A radian is equal to 180 degrees because a whole circle is 360 degrees and is equal to two pi radians. A radian is not as widely used in the measurement of circles and angles as a degree because it involves the knowledge of higher mathematics and includes tangents, sine, and cosines. A sin(θ) is the vertical component and cos(θ) is the horizontal coordinate of the arc endpoint.