Published by:
CGP EDU Academic Team
Published on: August 12, 2026
If y = cos –1 
, then 
is -
Text Solution
Verified by ExpertsThe correct answer is:
B
let y = cos –1 
r = 
& θ = tan –1 
y = cos –1 [sin θ .cosx + cos θ .sinx]
= cos –1 [sin(x+ θ )] = cos –1 
y = 
– x – θ = 
– x – tan –1 
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