Back to Freecodecamp

Double Angle Formulas

curriculum/challenges/english/blocks/trig-identities-formulas/double-angle-formulas-video.md

latest387 B
Original Source

--description--

In this video, you will learn about the double angle formulas.

--questions--

--text--

What is the double angle formula for $\sin(2\theta)$?

--answers--

$\sin(2\theta) = 2\cos^2(\theta)$


$\sin(2\theta) = \cos(2\theta)$


$\sin(2\theta) = 2\sin(\theta)\cos(\theta)$


$\sin(2\theta) = \sin^2(\theta) - \cos^2(\theta)$

--video-solution--

3