RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 3 of Exercise 4.13

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3

Solve: cos–1 √3x+cos–1x= π/2

Given:-


Take



We know that, Formula



Thus,






Squaring both sides, we get


3x4 = 1 – x2 – 3x2 + 3x4


1 – 4x2 = 0




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