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Find all values for $x$ for which $\sin^{2}x+2\text{sin }x+1=0$

A

$\cfrac{\pi}{2}+2\pi k$

B

$\cfrac{3\pi}{2}+2\pi k$

C

$\pi+2\pi k$

D

$\cfrac{\pi}{4}+2\pi k$

E

$\cfrac{2\pi}{3}+2\pi k$

Accuracy 0%
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