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if α, β, γ are connected by the relation 2 tan2α tan2β tan2γ + tan2α tan2β + tan2β tan2γ +tan2γ tan2α =1, then the value of cos2α +cos2β +cos2γ is ________ answer: 1 ...
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in any triangle ABC, the value of \sum{} a(b2+c2) cosA is 1) 3 abc 2)3(a2+b2+c2) 3)a2+b2+c2 4)abc answer: 1)3 abc ...
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HI.....I AM TAKING BRILLIANT TUTORIALS CORESPONDENCE COURSE FOR AIEEE 2011...... IS THERE ANYONE ELSE ON THIS SITE TAKING BRILLIANT TUTORIAL COACHING SOTHAT WE CAN SHARE INFORMATON ON THE SUBJECT, MATERIAL,DOUBTS ETC??? ...
