Trig Degree Calculator

A trigonometric function is a function that takes an angle as its argument. One of the applications of trigonometric functions is analyzing right triangles by relating their sides' lengths to their angles. In our right triangle trigonometry calculator, you can see how we do it.

Although right triangles are limited to acute angles (apart from the right one), we can evaluate these functions at any angle (see our trigonometric functions calculator). In the following section, you can look at a chart of values of trigonometric functions evaluated at the most common angles.

Trig degree chart with fractions and square roots

Trig degree chart with decimals

• The first table provides the values using fractions and square roots, which minimize the loss of precision in problems in which we're performing many calculations. Apart from that, they are more compact and easier to write.
• The second table is the same as the first one but with decimals, which can help you compare different values.
• Initially, we only need the sine and cosine values, and then can deduct the remaining functions by using the following trigonometric identities:
  • tan(θ) = sin(θ)/cos(θ);
    • e.g. tan(30°) = sin(30°)/cos(30°) = (1/2)/(√3/2) = 1/√3
  • cot(θ) = cos(θ)/sin(θ)
    • e.g. cot(30°) = cos(30°)/sin(30°) = (√3/2)/(1/2) = √3
  • sec(θ) = 1/cos(θ)
    • e.g. sec(30°) = 1/cos(30°) = 1/(√3/2) = 2/√3
  • csc(θ) = 1/sin(θ)
    • e.g. csc(30°) = 1/sin(30°) = 1/(1/2) = 2
• und stands for undefined values, which, in this case, correspond to functions that require dividing by zero (something that doesn't have a mathematical definition). For example, as tan(90°) = sin(90°)/cos(90°) = 1/0, the tangent of 90 degrees is undefined.

• Trig functions calculator;
• Exact value of trig functions calculator; and
• Theta calculator.