Question
Sun September 27, 2009 By: Khushal Gupta

Plzz hurry triogonometry.

Expert Reply
Sun September 27, 2009

LHS

=(secA+secAtanA+secAcotA)-(cosecA+cosecAtanA+cosecAcotA)

=[secAtanA-cotAcosecA]+[secA-cosecA+secAcotA-cosecAtanA]

=[secAtanA-cotAcosecA]+[secA-cosecA+cosecA-secA]

=secAtanA-cotAcosecA

=RHS

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