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The value of theta satisfying sin 7 theta = sin 4 theta - sin theta in 0

The value of theta satisfying sin 7 theta = sin 4 theta - sin theta in 0

Grade:11

1 Answers

Vikas TU
14149 Points
4 years ago
Dear Student,
From the given qstn, we can write i t as:

sin 7 theta + sin theta = sin 4 theta .

2 sin 4 theta cos 3 theta = sin 4 theta

cos 3 theta = ½ 3 theta = 60 .. theta = 20.

Cheers!!
Regards,
Vikas (B. Tech. 4th year
Thapar University)

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