Published by:
CGP EDU Academic Team
Published on: August 12, 2026
The expression 3 
– 2 
is equal to
Text Solution
Verified by ExpertsThe correct answer is:
B
3{cos 4 α + sin 4 α } – 2{cos 6 α + sin 6 α }
= 3{1 – 2 sin 2 α cos 2 α } – 2 {1 × (cos 4 α + sin 4 α – sin 2 α cos 2 α )}
= 3 – 6 sin 2 α cos 2 α – 2 {1 – 3 sin 2 α cos 2 α } = 3 – 6 sin 2 α cos 2 α – 2 + 6 sin 2 α cos 2 α = 1
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