Book: RS Aggarwal - Mathematics
Chapter: 4. Inverse Trigonometric Functions
Subject: Maths - Class 12th
Q. No. 1 B of Exercise 4C
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1 B
Prove that:
To Prove: tan-1 x + cot-1 (x + 1) = tan-1 (x2 + x + 1)
Formula Used:
1) 
2) 
Proof:
LHS = tan-1 x + cot-1 (x + 1) … (1)
= tan-1 (x2 + x + 1)
= RHS
Therefore, LHS = RHS
Hence proved.
Chapter Exercises
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