Trigonometry Calculator
sin, cos, tan and their inverses. Angles in degrees by default.
What is a trigonometry calculator?
A trigonometry calculator finds the sine, cosine and tangent of an angle. Enter an angle in degrees or radians and it shows all three values at once.
How to use the trigonometry calculator
Enter the angle, choose Degrees or Radians, and click Calculate. The calculator shows sin, cos and tan for that angle.
Trigonometry formulas
In a right triangle, sin = opposite ÷ hypotenuse, cos = adjacent ÷ hypotenuse, and tan = opposite ÷ adjacent, which is also sin ÷ cos.
Example
sin(30°) = 0.5 and cos(60°) = 0.5. For 30°, cos = 0.866025 and tan = 0.57735.
Frequently Asked Questions
What is sin(30°)?
sin(30°) = 0.5. Try it on the calculator above.
What is cos(60°)?
cos(60°) = 0.5. Try it on the calculator above.
What is the difference between degrees and radians?
Degrees and radians are two ways to measure angles: 180° equals π radians. This calculator works in degrees by default and also has a radians mode.
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