please answer this question mentioned in attachment
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Step-by-step explanation:
lhs=(sinA-cosA/sinA+cosA)+sinA+cosA/sinA-cosA)
=(sinA-cosA)^2+(sinA+cosA)^2/(cosA+sinA)(sinA-cosA)
=sin^2A+cos^2A-2sinAcosA+sin^2A+cos^2A+)2sinAcosA/sin^2A-cos^2A
1+1/sin^2A-(1-sin^2A)
=2/sin^2A-1+sin^2A
=2/2sin^2A-1.
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