1/secA-1 + 1/SecA+1 = 2 cosec A. cotA
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1/secA-1 + 1/secA+1=2cosecA.cotA
LHS:
=secA+1+secA-1/sec*A-1*
=2secA/tan*A
=2/cosA÷sin*A/cos*A
=2cosA (cos*A/sin*A)
=2×(1/sinA)×(cosA/sinA)
=2cosecA.cotA=RHS
LHS:
=secA+1+secA-1/sec*A-1*
=2secA/tan*A
=2/cosA÷sin*A/cos*A
=2cosA (cos*A/sin*A)
=2×(1/sinA)×(cosA/sinA)
=2cosecA.cotA=RHS
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