1+secA/secA=sin2A/1-cosA
Simplify LHS and RHS separately
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Step-by-step explanation:
1+sec A/secA=sec^2A/1-cosA
L.H.S= 1+secA/secA
=(1+1/cosA)/cosA
=((cosA+1)/cosA)/1/cosA
=((cosA+1)/cosA)*cosA
=1+cosA
= 1+ cosA*(1-cosA)/1-cosA
=(1^2-cos^2A)/1- cosA
= sin^2A/1-cosA
= R.H.S
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