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In (0, 2pi), the number of solutions of ...

In `(0, 2pi)`, the number of solutions of `cos2theta=sintheta` are

A

1

B

2

C

3

D

4

Text Solution

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The correct Answer is:
C
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TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS -Competitive Thinking
  1. cos2theta = (sqrt(2)+1)(costheta -1/sqrt(2))

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  2. If 32 tan^8 theta =2 cos^2 alpha-3 cos alpha and 3cos2 theta =1, then ...

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  3. In (0, 2pi), the number of solutions of cos2theta=sintheta are

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  4. The number of values of theta in the interval (-(pi)/(2), (pi)/(2)) su...

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  5. The number of solutions of the equation cos^2(x+pi/6)+cos^2x-2cos(x+pi...

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  6. If the sum of all the solutions of the equation 8 cosx.(cos(pi/6+x)cos...

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  7. If sec^2 theta =4/3, then the general value of theta is

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  8. "cot" theta = "sin" 2 theta, theta ne n pi, n in Z, "if" theta equals

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  9. Find the smallest positive value of x and y satisfying x-y=pi/4 and co...

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  10. If 0 <= x < 2pi, then the number of real values of x, which satisfy th...

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  11. If the angles of a triangle are in the ratio 1:2:3,the corresponding s...

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  12. In a A B C ,A : B : C=3:5: 4. Then a+b+csqrt(2) is equal to 2b b. 2c ...

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  13. If the angles of a triangle are in the ratio 4:1:1, then the ratio of ...

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  14. ln a DeltaABC, if (cosA)/a=(cosB)/b=(cosC)/c and the side a = 2, then ...

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  15. In DeltaABC, if sin^(2)A+sin^(2)B=sin^(2)C and l(AB)=10, then the maxi...

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  16. In a triangle ABC, if sin A sin B= (ab)/(c^(2)), then the triangle is ...

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  17. The perimeter of a triangle ABC is 6 times the arithmatic mean of the ...

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  18. If angles A,B, and C are in A.P., then (a+c)/b is equal to

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  19. If one side of a triangle is double the other, and the angles opposite...

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  20. In triangleABC, (cos2A)/(a^(2))-(cos2B)/(b^(2))=

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