CAIE P1 2009 June — Question 1

Exam BoardCAIE
ModuleP1 (Pure Mathematics 1)
Year2009
SessionJune
TopicReciprocal Trig & Identities
1 Prove the identity \(\frac { \sin x } { 1 - \sin x } - \frac { \sin x } { 1 + \sin x } \equiv 2 \tan ^ { 2 } x\).
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