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Each question has four choices a,b,c and d out of which only one is correct. Each question contains Statement 1 and Statement 2. Make your answer as: If both the statements are true and Statement 2 is the correct explanation of statement 1. If both the statements are True but Statement 2 is not the correct explanation of Statement 1. If Statement 1 is True and Statement 2 is False. If Statement 1 is False and Statement 2 is True. Statement 1: `sinpi/(18)` is a root of `8x^3-6x+1=0` Statement 2: For any `theta in R ,sin3theta=3sintheta-4sin^3theta`

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Each question has four choices a,b,c and d out of which only one is correct. Each question contains Statement 1 and Statement 2. Make your answer as: If both the statements are true and Statement 2 is the correct explanation of statement 1. If both the statements are True but Statement 2 is not the correct explanation of Statement 1. If Statement 1 is True and Statement 2 is False. If Statement 1 is False and Statement 2 is True. Statement 1: tan5^0 is an irrational number Statement 2: tan15^0 is an irrational number.

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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
  1. If the sides of a triangle are 17 , 25a n d28 , then find the greatest...

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  2. If both the distinct roots of the equation |sinx|^2+|sinx|+b=0in[0,pi]...

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

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  4. In triangle ABC, prove that sin(B+C-A)+sin(C+A-B)+sin(A+B-C) =4sin A...

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

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  6. If alpha+beta =(pi/2) and beta+gamma=alpha, then the tanalpha equals:

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

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

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

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

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

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

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

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

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  15. If (cosx)/a=(cos(x+theta))/b=(cos(x+2theta))/c=(cos(x+3theta))/d then ...

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  16. Let PQR be a triangle of area Delta with a=2,b=7/2 and c=5/2, where a,...

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

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

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

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  20. The equation sin^4x-2cos^2x+a^2=0 can be solved if

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