Book: RD Sharma - Mathematics (Volume 1)
Chapter: 4. Inverse Trigonometric Functions
Subject: Maths - Class 12th
Q. No. 3 of Exercise 4.11
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3
Solve the following equations for x:
,
Given:- 
Take
We know that, Formula
Thus,
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 2x2 – 8 + 2 = 12
⇒ 2x2 = 18
⇒ 
Since,
x < –√3 or x > √3
So,
x= +3, –3 is the root of the given equation
Therefore,
x= +3, –3
