prove that sin(90 -A)cos(90-A) is equal to tan A /1 plus tan square A
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Answered by
2
It's so hard bro I'm so sorry I'm failed of this question.
I'm trying till 10:28Am
Now it's 10:45
I'm really sorry
Answered by
2
Step-by-step explanation:
LHS = sin(90 - A)* cos ( 90 - A)
= CosA sinA ----(1)
RHS = tanA / (1+ tan A)
= tan A/ secA
= ( SinA/cosA)/( 1/ cos? A)
= ( SinA cos? A)/ cosA
= SinA cosA ----(2) =
From (1) and (2),
LHS = RHS
pls mark me as a brainlist
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