a) \(\frac{9}{2}\left (\frac{π}{6}-1\right)\)
b) \(\frac{9}{4}\left (\frac{π}{2}+1\right)\)
c) \(\frac{9}{4}\left (\frac{π}{2}-1\right)\)
d) \(\left (\frac{π}{2}-1\right)\)
Find \(\int_0^{\frac{π}{4}} \,9 \,cos^2x \,dx\).
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answerhappygod
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Find \(\int_0^{\frac{π}{4}} \,9 \,cos^2x \,dx\).
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