यदि \( \cos ^{-1} \sqrt{p}+\cos ^{-1} \sqrt{1-p}+\cos ^{-1} \sqrt{1-q}=\frac{3 \pi}{4} \), तब \(...
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यदि \( \cos ^{-1} \sqrt{p}+\cos ^{-1} \sqrt{1-p}+\cos ^{-1} \sqrt{1-q}=\frac{3 \pi}{4} \), तब \( q \) का मान होगा
(A) 1
(B) \( \frac{1}{\sqrt{2}} \)
(C) \( \frac{1}{3} \)
(D) \( \frac{1}{2} \)
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