Math, asked by triptiroy573, 5 months ago

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Prove that
1. sin(150° + x) + sin(150° - x) = cos X

Answers

Answered by Anonymous

2

Step-by-step explanation:

sin(150° + x) + sin(150° - x)

sin150 cosx+ cos150 sinx +sin150 cosx - cos 150 sinx

sin150 cosx+sin150 cosx

2sin150.cosx

2(1/2)cosx

=cosx

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