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Question

Question: <img src="https://cdn.pureessence.tech/canvas_396.png?top_left_x=427&top_left_y=1518&width=300&heigh...

is equal to

A

(9/4) sinA

B

(3/4) sin3A

C
  • (3/4) sin3A
D

0

Answer
  • (3/4) sin3A
Explanation

Solution

The given expression is equal to

=

=

=

=−(34)sin⁡3 A- \left( \frac { 3 } { 4 } \right) \sin 3 \mathrm {~A}