Math

Cofunction Calculator

Apply cofunction identities like sin θ = cos(90° − θ).

Parameters Live Compute
Calculated Output
Complement angle (°) 60
Function value 0.5
Formula: sin θ = cos(90° − θ), etc.
Step-by-Step Breakdown
1. Values used:
2. Angle = 30 °
3.
4. Complement angle = 60°
5. Function value = 0.5
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Cofunction identities relate a trig function of an angle to the co-function of its complement.

The math behind it

sin θ = cos(90° − θ), tan θ = cot(90° − θ), and so on. The two angles add up to 90°.

Worked Example

sin(30°) = cos(60°) = 0.5.

Frequently Asked Questions

What are complementary angles?

Two angles that sum to 90°.

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