(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Finding the time derivative of [itex]sin^2( \alpha )[/itex], knowing that [itex] \dot \alpha ≠ 0[/itex]

2. Relevant equations

i know that [itex] \frac {d}{dt} sin ( \alpha ) = \dot \alpha cos ( \alpha) [/itex]

3. The attempt at a solution

That should give

[itex] \dot \alpha ^2 cos^2( \alpha ) [/itex]

But it's not and i'm not sure why.

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# Homework Help: Finding the time derivative of a trigonometric function

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