Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The complete solution of inequality 2cos 2 x – 7 cosx + 3 < 0 is
A
n π – 
< x < 
+ n π
< x < + n π
B
2n π – 
< x < 
+ 2n π
< x < + 2n π
C
2n π – 
< x < 
+ 2n π
< x < + 2n π
D
n π – 
< x < 
+ n π
< x < + n π
Text Solution
Verified by ExpertsThe correct answer is:
C
(cosx – 3) (2cos – 1) < 0
2cosx – 1 > 6
cosx > 
2n π – 
< x < 
+ 2n π
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