JEE Math Practice Question
Considering the principal values of the inverse trigonometric functions, the sum of all the solutions of the equation $$\cos ^{-1}(x)-2 \sin ^{-1}(x)=\cos ^{-1}(2 x)$$ is equal to :
- A.0
- B.1
- C.$$\frac{1}{2}$$
- D.$$-\frac{1}{2}$$
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