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Prove that : (tanA/2)/((a-b)(a-c))+(tanB...

Prove that : `(tanA/2)/((a-b)(a-c))+(tanB/2)/((b-a)(b-c))+(tanC/2)/((c-a)(c-b))=1/`

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RESONANCE DPP-JEE MAINS-All Questions
  1. Write of the following sets in the set builder form: {1}

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  2. Greatest positive term of a H.P. whose first who first two terms are 2...

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  3. Prove that : (tanA/2)/((a-b)(a-c))+(tanB/2)/((b-a)(b-c))+(tanC/2)/((c-...

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  4. The sum of first p -terms of a sequence is p(p+1)(p+2)dot the 10th ter...

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  5. (r3+r1)(r3+r2)sinC=2r3sqrt(r2r3+r3r1+r1r2)

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  6. Determine the domain and the range of the relation R defined by R{(x+1...

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  7. The value(s) of k which the equation x^2-k x-21=0 a n d x^2-3kx+35=0 h...

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  8. If p: 'Ram is tall' and q: 'Ram is intelligent' , then the statement ...

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  9. Describe the following set by set property method {0,3,8,15 ,24 ,35}

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  10. Let A(alpha)=[cosalpha0sinalpha0 1 0sinalpha0cosalpha] and X is a set ...

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  11. If p: Ashok works hard: q: Ashok gets good grade The verbal form for (...

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  12. In a circle, chords AB and CD intersect at a point R inside the circle...

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  13. The sides of a triangle are three consecutive natural numbers and its ...

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  14. Remove the irrationality in the denominator a.sqrt((sqrt(2)-1)/(...

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  15. If mean of squares of deviations of a set of n observations about -2a ...

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  16. Simplify the following expressions: (i)(sqrt(3)+sqrt(7))^2 (ii) ...

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  17. If distinct and positive quantities a ,b ,c are in H.P. then (a) b/c= ...

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  18. Which of the following is false? (p=>q)hArr(~ a=>~ p) b. pvv...

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  19. Evaluate/simplify the following: |sqrt(7-4sqrt(3))|+|sqrt((2-sqrt(3))^...

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  20. Find the number of diagonals of a 16-sided polygon.

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