Question

sin A=4÷5,find sin 3A​

Answer 1

$\huge \fbox \pink{ ★Answer}$

We have trignometry formula for sin3a

sin 3a= 3 sina - 4 sin^3a

given sina=3/4

sin 3a=3(3/4)-4(3/4)^3

9/4–27/16

=36–27/16

sin 3a=9/16

Answer 2

Answer:

Given,

sin a = 4 ÷ 5

To find :-

sin 3a

Solution :-

Refer to the attachment..

Hope it can help you!

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