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

Find the critical numbers of the function:

f(θ) = 2cosθ + sin^(2) θ

2. Relevant equations

None

3. The attempt at a solution

I differentiated the equation and got -2sinθ(1 - cosθ) and found the critical values to be θ = 0 degrees + 2pie * n but the correct answer was npie. Why is this?

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# Homework Help: Finding critical numbers of trig function

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