`y = sin(theta) cos(theta)` Differentiate.

Textbook Question

Chapter 3, 3.3 - Problem 10 - Calculus: Early Transcendentals (7th Edition, James Stewart).
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nick-teal's profile pic

nick-teal | High School Teacher | (Level 3) Adjunct Educator

Posted on

`y = sin(theta) cos(theta)`

`y' = cos(theta) cos (theta) + sin(theta) (-sin(theta))`

`y' = cos^2(theta) - sin^2(theta)`

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balajia | College Teacher | (Level 1) eNoter

Posted on

`y=(2sintheta.costheta)/2`

`y=sin(2theta)/2`

`y'=2cos(2theta)/2=cos(2theta)`

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