Trig Calculator (Sin, Cos, Tan & Inverse)
Trig calculator: sine, cosine, tangent, cosecant, secant and cotangent of an angle in degrees or radians — or the inverse functions of a value.
sin θ · cos θ · tan θ = sin θ / cos θ
How to use this calculator
- Type your input in the box.
- The result updates as you type.
- Use “Copy result” or “Copy link” to share it.
In a right triangle, sin = opposite/hypotenuse, cos = adjacent/hypotenuse and tan = opposite/adjacent. tan is undefined at 90°.
Frequently asked questions
sin 30°?
0.5; cos 30° ≈ 0.866, tan 30° ≈ 0.5774.
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