P.T the smaller angle theta between any ...

P.T the smaller angle `theta` between any two diagonals of a cube is given by `cos theta = 1//3`

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IF A=[{:(1,2,2),(2,1,2),(2,2,1):}] then show that A^2-4A-5I=O.
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Prove that the following four points are coplanar. i) 4bar(i)+5bar(j...
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P.T the smaller angle theta between any two diagonals of a cube is giv...
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If A is not an integral multipe of pi , prove that cosAcos2Acos4Acos8A...
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If acos2theta+bsin2theta=c" has "theta(1),theta(2) as its solutions ...
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Prove that tan^(-1)((1)/(2))+tan^(-1)((1)/(5))+tan^(-1)((1)/(8))=(pi)/...
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In a DeltaABC" if " a:b:c=7:8:9 then show that cosA:cosB:cosC=14:11:6
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