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The number of solutions for the equation...

The number of solutions for the equation `cos^(-1)(1-x)+mcos^(-1)x=(npi)/2" where "m gt 0, n le 0` is

A

0

B

1

C

2

D

Infinite

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The correct Answer is:
A
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AAKASH SERIES-INVERSE TRIGNOMETRIC FUNCTIONS-LECTURE SHEET (EXERCISE - III) (STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  19. If x, y, z are natural numbers such that cot^(-1)x+cot^(-1)y=cot^(-1)z...

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