RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 8 D of Exercise 4C

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8 D

Solve for x:

To find: value of x

Formula Used:


LHS = cos(2sin-1 x)

Let θ = sin-1 x

So, x = sin θ … (1)

LHS = cos(2θ)

= 1 – 2sin2 θ

Substituting in the given equation,

Substituting in (1),

Therefore, are the required values of x.

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