Book: RS Aggarwal - Mathematics
Chapter: 4. Inverse Trigonometric Functions
Subject: Maths - Class 12th
Q. No. 1 A of Exercise 4C
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1 A
Prove that:
To Prove: 
Formula Used: 
Proof:
LHS 
… (1)
Let x = tan A … (2)
Substituting (2) in (1),
LHS 
From (2), A = tan-1 x,
= RHS
Therefore, LHS = RHS
Hence proved.
Chapter Exercises
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