plz solve this fast
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Step-by-step explanation:
LHS
= (cosA - sinA+1) / (cosA + sinA - 1)
= (cosA - sinA +1) × (cosA +sinA + 1)/(cosA + sinA)² - 1²
= (cos²A - sinAcosA + cosA + sinAcosA - sin²A + sinA + cosA-sinA+1)/(cos²A+sin²A+2sinAcosA-1)
= (cos²A - sin²A + 2cosA + 1)/(1 + 2sinAcosA - 1)
= (cos²A +cos²A +2cosA)/2sinAcosA
= (2cos²A + 2cosA)/2sinAcosA
= 2cosA (cosA + 1)/2sinAcosA
= (cosA + 1)/sinA
= (cosA/sinA) + (1/ sinA)
=cotA + cosecA = RHS ...............(proved)
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