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Prove:If The Direction Angle Of A Straight Line Angles Are Alpha,beta , Gamma , Then Solve Sin^2(a)+sin^2(b)+sin^2(c)=2. - Math Discussion

Prove:If the direction angle of a straight line angles are alpha,beta , gamma , then solve sin^2(a)+sin^2(b)+sin^2(c)=2.

solve the trigonometric function and prove L.H.S=R.H.S.
Keerthana 2015-06-03 10:19:36
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