Question

prove that !!

sin ( 90 - theta ) * tan theta = sin theta

Answer 1

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we know that sin(90°-©)= cos ©

with the above identity we get sin (90 -theta) = cos theta.

cos theta * sin thita / cos theta..
= sin theta..
= RHS.

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Answer 2

hey, here is your answer.......

Need to prove that,

sin(90°-A). tanA = sinA..........

here is the proof.....

we know that, sin(90°-A) = cosA...., and tanA = sinA/cosA.....

then,

sin(90°-A).tanA = cosA.(sinA/cosA)......

sin(90°-A).tanA = sinA.....

hence proved.....

hope this helps you....
thank you.....

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