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show that tan(A+Π/4)=cosA+sinB/cosA-sinA.

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trigonometric-identities

asked Jan 6, 2017 in TRIGONOMETRY by anonymous

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1 Answer

0 votes

Trigonometric identity :

does not exist.

is exist.

Consider left hand side :

Apply formula :

Substitute

answered Jan 6, 2017 by anonymous

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