Math, asked by eeshachowdary31, 10 months ago

sina+sin 5a= sin 3a solve it

Answers

Answered by Nikhil9971

1

Answer:

a=30°

Step-by-step explanation:

2Sin(a+5a)/2 Cos(a-5a)/2 = Sin3a

2Sin3aCos2a=Sin3a

Sin3a get cancelled

2Cos2a=1

Cos2a=1/2

Cos2a= Cos60°

2a = 60°

a = 30°

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