Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The sum of solution of equation
2 sin –1 
+ cos –1 
is – λ then λ equals
Text Solution
Verified by ExpertsThe correct answer is:
1
(1)
0 ≤ (x 2 + x + 1) ≤ 1 & 0 ≤ (x 2 + x) ≤ 1
which holds together for x = – 1, 0
At x = – 1 L.H.S. = 2sin –1 1 + cos –1 0
= π + 
.(true)
At x = 0 L.H.S. = π + 
(true)
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