cosec2A - cot2A = tanA
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Step-by-step explanation:
cosec2a – cot2a = tana
lhs= 1/sin2a – cos2a/sin2a
=1-cos2a/sin2a
cos2a = 1-2sin2a &
sin2a =2sinacosa ,
by using these
lhs= [1- (1-2sin2a)]/2sinacosa
=2sin2a/2sinacosa=sina/cosa
=tana = rhs
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