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show that tan(Π/4+A) and tan(Π/4-A)=1

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trigonometric-identities

asked Jan 7, 2017 in TRIGONOMETRY by anonymous

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1 Answer

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Trigonometric identity is

Apply formula :

Apply formula :

Simplify.

Consider left hand side,

answered Jan 7, 2017 by Anney Mentor
edited Jan 7, 2017 by Anney

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