Trigonometric EquationHard

Question

If sin^-1 + cosec^-1 = then a value of x is

Options

A.1

B.3

C.4

D.5

Solution

sin^-1
⇒ sin^-1 = cos^-1 ⇒ sin^-1 = sin^-1
∴ x = 3.

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