Trigonometry
Sine Double Angle
sin(2θ) using the double-angle identity.
Formula
Formula
sin 2θ = 2 sin θ cos θ
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| θ | angle (deg) | computed result | — | result |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenangle θ (deg) = 30
Result0.8660254038
Example 2
Givenangle θ (deg) = 45
Result1