Question

2 Sin 2 theta+3 Sin theta =0
find permissible
value of cos theta

Answer 1

Step-by-step explanation:

2sin 2 theta + 3 sin theta = 0

2sin theta cos theta = - 3sin theta

cos theta = -3sin theta/ 2 sin theta

cos theta = - 3/2

Answer 2

Answer:

Cos thera = -3/4

Step-by-step explanation:

2 Sin 2 theta +3 Sin theta = 0

2 Sin 2 theta = - 3 Sin theta

2 * 2 Sin theta * Cos theta = - 3 Sin theta

4 * Cos theta = - 3

Cos theta = -3/4