Prove that (sin 9x+sin7+sin 3x+sin 5x)/(...

Prove that `(sin 9x+sin7+sin 3x+sin 5x)/(cos 9x+ cos 7x+ cos 3x+cos 5x)=tan 6x`.

ANNUAL EXAMINATION QUESTION PAPER MARCH 2013 SOUTH
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ANNUAL EXAMINATION QUESTION PAPER MARCH 2013 NORTH
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ANNUAL EXAMINATION QUESTION PAPER MARCH 2014 NORTH
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