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Exercise

$\cos^2a+3\sin+2$

Step-by-step Solution

1

Applying the pythagorean identity: $\cos^2(\theta)=1-\sin(\theta)^2$

$3-\sin\left(a\right)^2+3\sin\left(a\right)$
Why is 1 - sin(x)^2 = cos(x)^2 ?

Final answer to the exercise

$3-\sin\left(a\right)^2+3\sin\left(a\right)$

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