Question
Wed June 01, 2011 By: Pooja Dev
 

prove the following i)tan^-1(1/4)+tan^-1(2/9)=1/2 cos^-1(3/5) II) 2sin^-1(3/4)=tan^-1(24/7) III)tan^-1(2/3)=1/2 tan^-1(12/5) IV)2sin^-13/5=tan^-1(17/31)=?/4

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Wed June 01, 2011
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