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Prove that (r+r1)tan((B-C)/2)+(r+r2)tan(...

Prove that `(r+r_1)tan((B-C)/2)+(r+r_2)tan((C-A)/2)+(r+r_3)tan((A-B)/2)=0`

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RESONANCE DPP-JEE MAINS-All Questions
  1. Number of values of k for which the lines k x+y+1=0 x+k y+2=0 x+y...

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  2. Make the following expressions free from modulus sign: (x in R) |x^3...

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  3. Prove that (r+r1)tan((B-C)/2)+(r+r2)tan((C-A)/2)+(r+r3)tan((A-B)/2)=0

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  4. (log)(0. 3)(x-1)<(log)(0. 09)(x-1)t h e nx in the lies in the inte...

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  5. The number 3. 145 when expressed as a rational number in lowest form...

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  6. Make the following expressions free from modulus sign : (i) |x^(2) -...

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  7. In drawing of a card from a well shuffled ordinary deck of playing ...

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  8. Makes the following expressions free from modulus sign: (x in RR) |x^...

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  9. The ray of light comes along the lines L=0 and strikes the plane mirro...

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  10. Total number of positive integers x for which f(x)=x^3-8x^2+20 x-13 is...

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  11. Make the following expressions free from modulus sign: (x in R) |x+3...

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  12. Let P(x)=x^4+a x^3+b x^2+c x+d be a polynomial such that P(1)=1,P(2)=8...

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  13. Two dice are thrown simultaneously, the probability of obtaining to...

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  14. The solution set of the inequation 3^(72)(1/3)^x(1/3)^(sqrt(x))>1 is [...

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  15. A forecast forr Indian team is to be made of the results of five crick...

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  16. IF (log)6(log)2[sqrt(4x+2)]+2sqrt(x)=0, then x= .

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  17. If P(Ann B )=0. 3 ,P(A nn B )=0. 2 and P(AnnB)=0. 4 then P(AuuB)= ...

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  18. Which of the following is greater? sqrt(13)-sqrt(12),sqrt(14)-sqrt(13)

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  19. If a cricket team of 11 players is to be selected from 8 batsman, 6 bo...

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  20. Which of the following is greater ? 7/8.(6)/7

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