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Cos 2 theta into cos theta by 2 minus Cos 3 theta into cos 9 theta by 2 is equal to sin 5 theta into sin 5 theta by 2

Cos 2 theta into cos theta by 2 minus Cos 3 theta into cos 9 theta by 2 is equal to sin 5 theta into sin 5 theta by 2
 

Grade:11

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4405 Points
2 years ago
this question is not understandable please click a pic then upload it...it will be better

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