CBSE Class 10 Answered
prove that
Asked by | 06 Jun, 2008, 07:32: PM
Expert Answer
1/(cosecA-cotA)
= 1/ [(1/sinA)-(cosA/sinA)]
= 1/ [(1-cosA)/sinA]
= sinA/(1-cosA)
= sinA(1+cosA)/(1-cosA)(1+cosA)
= (sinA+sinAcosA)/(1-cos2A)
= (sinA+sinAcosA)/sin2A
= sinA/sin2A + sinAcosA/sin2A
= 1/sinA + cosA/sinA
= cosecA + cotA
Answered by | 07 Jun, 2008, 08:25: PM
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