Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If the equation 
has only one real root 
. Then the value of 
is :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Analyze the Cubic: Let 
.
. Since 
.
By Intermediate Value Theorem, the real root 
.
Therefore, sin 
is negative.
Simplify the Expression:
Let the expression be 
.
Using 
:
Apply Identity:
Since 
for 
:
Using 
for 
(since 
):
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