Question

Plzzzzzz answer this question

Answer 1

Answer:

1

Step-by-step explanation:

cos 50 = sin 90-50 = sin 40

sin 50 = cos 40

cos(40 - theta) = sin ( 50 + theta)

then the first two terms cancel out.

in the last term use cos 50 = sin 40 in numerator and denominator

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

it simplifies into one

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