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If P=cospi/(20)dotcos(3pi)/(20)dotcos(7p...

If `P=cospi/(20)dotcos(3pi)/(20)dotcos(7pi)/(20)dotcos(9pi)/(20)&Q=cospi/(11)dotcos(2pi)/(11)dotcos(8pi)/(11)dotcos(16pi)/(11),` then `P/Q` is not defined (b) 1 (c) 2 (d) None of these

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cos(pi)/(11)+cos(3 pi)/(11)+cos(5 pi)/(11)+cos(7 pi)/(11)+cos(9 pi)/(11)=(1)/(2)

cos(pi)/(11)+cos(3 pi)/(11)+......cos(9 pi)/(11)=(1)/(2)

cot(pi/20).cot((3pi)/20)cot((5pi)/20)cot((7pi)/20)cot((9pi)/20)=....

The value of cos""(pi)/(11)+cos""(3pi)/(11)+cos""(5pi)/(11)+cos""(7pi)/(11)+cos""(9pi)/(11), is

The value of (cos pi)/(11)+(cos(3 pi))/(11)+(cos(5 pi))/(11)+(cos(7 pi))/(11)+(cos(9 pi))/(11)

cot((pi)/(20))cot((3 pi)/(20))cot((5 pi)/(20))cot((7 pi)/(20))cot((9 pi)/(20))cot((15 pi)/(20))=

cos ((pi) / (11)) cos ((2 pi) / (11)) cos ((3 pi) / (11)) ... cos ((11 pi) / (11)) =

cos ((pi) / (11)) cos (2 (pi) / (11)) cos (3 (pi) / (11)) cos (4 (pi) / (11)) cos (5 (pi) / (11))

cos(pi/12)+sin^2((3pi)/12)+sin^2((9pi)/12)+cos((11pi)/12)=...

RESONANCE DPP-JEE MAINS-All Questions
  1. If |1 1 1a b c a^3b^3c^3|=(a-b)(b-c)(c-a)(a+b+c), then the solution o...

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  2. The equation of the circle of radius 5 in the first quadrant which ...

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  3. If P=cospi/(20)dotcos(3pi)/(20)dotcos(7pi)/(20)dotcos(9pi)/(20)&Q=cosp...

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  4. If alpha,alpha^2) falls inside the angle made by the lines 2y=x ,x >0&...

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  6. If A and B are symmetric matrices then A B-B A is a Symmetric Matrix ...

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  7. If a ,b ,c are real numbers satisfying the conditgion a+b+c=0, then th...

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  8. If x1, x2& x3 are three distinct numbers which satisfy the relation ...

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  9. The solution set of the inequality (3^x-4^x)/(x^2-3x-4)geq0i s

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  10. If the lines x^2+2x y-35 y^2-4x+44 y-12=0&5x+lambday-8=0 are conc...

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  11. If P=(sin 300^0dottan 330^0dotsec 420^0)/(tan135^0dots in 210^0dots ...

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  12. Which of the following equations have no real solutions? (a) x^2-2x+5...

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  13. Let y=1/(2+1/(3+1/(2+1/(3+)))) , then the value of y is (a)(sqrt(1...

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  14. Consider a function f(x):R(R)R and if (lim)(xveca)[f(x)] does not exis...

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  15. Number of integers satisfying the inequation (x^2-x-1)(x^2-x-7)<-5, ar...

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  16. If the quadratic equations, a x^2+2c x+b=0a n da x^2+2b x+c=0(b!=c) ha...

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  17. If the expression cos(x-(3pi)/2)+sing((3pi)/2+x)+sin(32pi+x)-18cos(19...

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  18. Domain of f(x)=sin^(-1)[2-4x^2], where [.] denotes the greatest intege...

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  19. If 2tan^2x-5secx=1 for exactly seven distinct value of x in [0,(npi)/2...

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  20. If 3sin^(-1)((2x)/(1+x^2))-4cos^(-1)((1-x^2)/(1+x^2))+2tan^(-2)((2x)/(...

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