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If x + y = 2pi//3 and cos x + cos y = sq...

If `x + y = 2pi//3` and `cos x + cos y = sqrt(3)//2`, then x, y =

A

`pi//3, pi//6`

B

`pi//4, pi//3`

C

`pi//2, pi//6`

D

No solution

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The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-TRIGONOMETRIC EQUATIONS -EXERCISE 1
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  3. If x + y = 2pi//3 and cos x + cos y = sqrt(3)//2, then x, y =

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  5. The smallest positive values of x and y which satisfy tan (x-y)=1, sec...

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  6. The solution of (81)^(sin^(2)x) +(81)^(cos^(2)x)=30 in [0, pi//2] is

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  8. The equation e^(sin x)-e^(-sin x)-4=0 has

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  9. The equation sin^(4)x -2cos^(2)x + a^(2)=0 is solvable if

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  13. If tan px = cot qx then the solutions are in

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  14. If x in (-pi, pi) such that y=1 +|cos x|+|cos^(2)x|+|cos^(3)|+ …. And ...

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  16. If the equation (cos p - 1)x^(2) + cos p x + sin p =0 in the varable x...

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  17. In a triangle ABC, angle A gt angle B. If the measures of angle A, ang...

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  18. If alpha, beta are different values of x satisfying a cos x + b sin x ...

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  19. If alpha, beta are solutions of a cos x + b sin x = c then cos alpha +...

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