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The number of integral value of k for wh...

The number of integral value of k for which the equation `7cos x+5sin x=2k+1` has a solution is

A

4

B

8

C

10

D

12

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The correct Answer is:
B
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ML KHANNA-TRIGONOMETRICAL EQUATIONS -PROBLEM SET (2) (MULTIPICE CHOICE QUESTIONS)
  1. Maximum value of sin (x + (pi)/(6)) + cos (x + (pi)/(6)) is

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  2. The equaltion a sin x+b cos x=c, where |c|gtsqrt(a^(2)+b^(2)) has

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  3. The number of integral value of k for which the equation 7cos x+5sin x...

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  4. If r sin theta = sqrt3, r + 4 sin theta = 2 (sqrt3 + 1), 0 le theta ...

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  5. If r gt 0, - pi le theta le pi and r, theta satisfy r sin theta =3 ...

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  6. Minimum value of 2^(sinx)+2^(cosx) is

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  7. If tan a theta-tan b theta=0, then prove that the values of theta form...

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  8. If cos p theta+cos q theta=0, then prove that the different values of ...

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  9. Find the most general value of theta which satisfies the equation s...

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  10. The most general value of theta which satisfy both the equation cos th...

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  11. Find the most general value of theta which satisfies the equation s...

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  12. Find the general values of theta which satisfies the equation tan th...

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  13. The most general value of theta which satisfies both the equation in G...

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  14. If cos 3x+sin (2x-(7pi)/6)=-2, then x is equal to (k in Z)

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  15. The most general value of theta which satisfies both the equation in I...

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  16. The most general value of theta which satisfies both the equation in ...

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  17. General solution of the equation tan theta + tan 4 theta + tan 7 the...

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  18. If sin 3 alpha =4 sin alpha sin (x+alpha ) sin(x-alpha ) , then

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  19. If tan3theta=cottheta, then general value of theta is :

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  20. If tan 5 theta = cot 3 theta, then theta =

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