Question

find the value of (sin^2 theta)/(cos theta) + cos theta = 1/(cos theta)​

Answer 1

Firstly take L.H.S.(left hand side),

i.e.

L

H

S

=1−(sin2θ1−cosθ)=1−[1−cos21−cosθ]

=1−[12−(cosθ)21−cosθ]=1−(1+cosθ)(1−cosθ)(1−cosθ)

so after solving it will give,

=1−(1+cosθ)=1−1−cosθ

which will give,

= − cos θ= RHS

hence proved.

hope this helps you

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