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May 28, 2015

Homework Help: maths (trigonometry)

Posted by marley on Monday, June 6, 2011 at 11:53pm.

please solve these if possible

Q1. If sinx +siny=3(cosy-cosx) then the value of sin3x/sin3y.
Q2. If sina ,cosa,and tan a are in g.p.then cos cubea+cos square a is equal to

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