Question
Sun September 27, 2009 By: Khushal Gupta

Trigonometry.

Expert Reply
Tue September 29, 2009

tan2 θ - sin2 θ =  sin2 θ/cos 2 θ  - sin2 θ

= sin2 θ(sec2  θ-1)

=sin2 θ tan2 θ  =RHS

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