Question

value of : cos theta sin(90-theta) + sin theta cos(90-theta)

Answer 1

Answer:

i hope this answer may help you the best

Step-by-step explanation:

given

cos theta sin (90-thetha)+sin theta cos (90-theta)

cos theta cos theta + sin theta sin theta

cos^2 theta + sin^2 theta

=1

Answer 2

Answer:

1

Step-by-step explanation:

Sin(90-theta) = cos theta

Cos(90-theta) = sin theta

So, the question becomes

(cos theta)^2 +(sin theta)^2=1

(It's a basic identity that cos square theta plus sin square theta equals one)