Question

If 1- cos 2 theta / sin theta = 1 find the value of theta .

Answer 1

Answer:

1-cos ^2 theta / sin theta = 1

according to the trigonometric identities ,

1- cos^2 theta = sin^2 theta

substitute this in given equation

LHS

= sin^2 theta / sin theta

= sin theta

sin theta = 1

sin 90° = 1

theta = 90°

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