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Prove that the acute angle between the l...

Prove that the acute angle between the lines whose direction cosines are given by the relation `l+ m+n=0` and `l^2+m^2-n^2=0`and `pi/3`

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MODERN PUBLICATION-TEST PAPER 3-PROBLEM
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  9. Shows that the triangle of greatest area that can be inscribed in a ci...

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  12. Evaluate : tan^(-1)((-1)/sqrt3)+cot^(-1)(1/sqrt3)+tan^(-1)(sin(-π/2)).

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  13. If | adj A | = 64 then find | A |

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  14. Evaluate the following : [[sin^2theta,cos^2theta,1],[cos^2theta,sin^2t...

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  15. A differentiable function f defined for all x > 0 and satisfies f(x^2)...

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  18. Write the vector equation ofthe plane whose cartesian equation is x + ...

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  19. Let A (1,2,3). Then, find the number of equivalence relations containi...

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