Question

it is correct to say that sin tita = cos (90-tita)​

Answer 1

yes sin theta is cos 90-theta

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Answer 2

patterns of right triangle .

all triangles have 3 angles that aad to 180deggrees .

therefore,if one angle is 90 deggrees we can figure out sin theta = cos (90-theta) and cos theta = sin theta = sin (90 -theta).

therefore we can say that sin theta = cos (90 - theta).