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Question

Question: \(\int_{}^{}\frac{d(\cos\theta)}{\sqrt{1–\cos^{2}\theta}}\)dqq...

d(cosθ)1cos2θ\int_{}^{}\frac{d(\cos\theta)}{\sqrt{1–\cos^{2}\theta}}dqq

A

cos–1q + c

B

q + c

C

sin–1q + c

D

sin–1(cos q)+ c

Answer

sin–1(cos q)+ c

Explanation

Solution

dq

= –

put t = cos q

dt = – sin q dq = dt1t2\int \frac { \mathrm { dt } } { \sqrt { 1 - \mathrm { t } ^ { 2 } } } = sin–1t + c

= sin–1 (cos q) + c