Question

Find sin theta *cos theta

Answer 1

Step-by-step explanation:

we know,

sin²theta + cos²theta=1

now,

(sin²theta)²+(cos²theta)²=½

this is of the form a²+b²

(a+b)²=a²+b²+2ab

a²+b²=(a+b)²-2ab

(sin²theta+ cos² theta)²-2sin²thetacos²theta=½

1-2sin²theta cos²theta=½

-2sin²theta cos² theta= -½

sin²theta cos²theta= 1/4

sin theta cos theta=1/2

Answer 2

Step-by-step explanation:

Hope it will help you

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