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 T O P I C    R E V I E W Anand Posted - 08/02/2011 : 02:57:19 x= acos+bsiny= asin-bcosprove that X+y = a+bso x+y=acos+bsin+2acosbsin+asin+bcos-2asinbcos=a(sin+cos)+b(sin+cos)+2[acosbsin-asinbcos]=a(1)+b(1)+2 [acosbsin-asinbcos ]What to do after this step ? 2   L A T E S T    R E P L I E S    (Newest First) Anand Posted - 08/08/2011 : 04:09:59 Got itThanks royhaas Posted - 08/02/2011 : 07:23:42 The term in brackets is zero.

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