prove that (secФ-cosФ)cotФ=sinФ
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lhs
(1/cos a -cos a)×cos a/sin a
(1-cos²a/cos a)×cos a/sin a
(sin² a/cos a)×cos a/sin a
sin a
rhs
(1/cos a -cos a)×cos a/sin a
(1-cos²a/cos a)×cos a/sin a
(sin² a/cos a)×cos a/sin a
sin a
rhs
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Heya user !!!
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