CAIE P1 2008 November — Question 2

Exam BoardCAIE
ModuleP1 (Pure Mathematics 1)
Year2008
SessionNovember
TopicReciprocal Trig & Identities
2 Prove the identity $$\frac { 1 + \sin x } { \cos x } + \frac { \cos x } { 1 + \sin x } \equiv \frac { 2 } { \cos x }$$
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