\(\int \frac{\cos x}{\sqrt{4-\sin^2 x}}dx\) equals1\(\sin^{-1}\left(x\right)+c\)2\(\sin^{-1}\left(\frac{\sin x}{2}\right)+C\)3\(\cos^{-1}\left(\frac{\sin x}{2}\right)+C\)4\(\cos^{-1}\left(\frac{\cos x}{2}\right)+C\)Answer & explanation+Correct answer: option 2Put \(\sin x=t\)
