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Prove: Sin(B+C−A) + Sin(C+A−B) + Sin(A+B...

Prove: Sin(B+C−A) + Sin(C+A−B) + Sin(A+B−C) = 4SinASinBSinC.

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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
  1. If both the distinct roots of the equation |sinx|^2+|sinx|+b=0in[0,pi]...

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  2. Each question has four choices a,b,c and d out of which only one is...

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  3. Prove: Sin(B+C−A) + Sin(C+A−B) + Sin(A+B−C) = 4SinASinBSinC.

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  4. The number of values of yin[-2pi,2pi] satisfying the equation |sin2x|+...

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  5. If alpha+beta=pi/2a n dbeta+gamma=alpha, then tanalpha equals

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  6. prove that a^2sin2B+b^2sin2A=4Delta

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  7. The equation cos^8x+bcos^4x+1=0 will have a solution if b belongs to ...

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  8. Let f(n)=2cosn xAAn in N , then f(1)f(n+1)-f(n) is equal to (a)f(n...

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  9. If in triangle A B C, \delta = a^2-(b-c)^2 , then find the value of ta...

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  10. The number of solutions of [sinx+cosx]=3+[-sinx]+[-cosx](w h e r e[] d...

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  11. If sintheta1-sintheta2=a a n d costheta1+costheta2=b , then (a)a^2+b...

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  12. If a , ba n dc are the side of a triangle, then the minimum value of (...

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  13. sinx+cosx=y^2-y+a has no value of x for any value of y if a belongs to...

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  14. If (cosx)/a=(cos(x+theta))/b=(cos(x+20))/c=(cos(x+3theta))/d then (a+...

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  15. Let P Q R be a triangle of area with a=2,b=7/2,and c=5/2, where a, b ...

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  16. If the inequality sin^2x+acosx+a^2>1+cosx holds for any x in R , then...

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  17. If cosalpha+cosbeta=0=sinalpha+sinbeta, then cos2alpha+cos2beta is e...

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  18. If the angle A ,Ba n dC of a triangle are in an arithmetic propression...

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  19. The equation sin^4x-2cos^2x+a^2=0 can be solved if (a) -sqrt(3)lt=alt=...

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  20. Value of (3+cot80^0cot20^0)/(cot80^0+cot20^0) is equal to (a)cot20^0...

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