Let \( f(x)=e^{\cos ^{-1} \sin \left(x+\frac{\pi}{3}\right)} \) then (a) \( f\left(\frac{8 \pi}{...

Описание

Let \( f(x)=e^{\cos ^{-1} \sin \left(x+\frac{\pi}{3}\right)} \) then
(a) \( f\left(\frac{8 \pi}{9}\right)=e^{\frac{5 \pi}{18}} \)
(b) \( f\left(\frac{8 \pi}{9}\right)=e^{\frac{13 \pi}{18}} \)
(c) \( f\left(\frac{7 \pi}{4}\right)=e^{\frac{\pi}{12}} \)
(d) \( f\left(-\frac{7 \pi}{4}\right)=e^{\frac{11 \pi}{12}} \)
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