Home
Class 12
MATHS
Number of values of x in [0, 2pi] and s...

Number of values of ` x in [0, 2pi]` and satisfying the equation
`cos x cos2x cos3x=1//4` is :

A

6

B

8

C

20

D

24

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRICAL IDENTITIES AND EQUATIONS

    MCGROW HILL PUBLICATION|Exercise SOLVED EXAMPLES (LEVEL 1 Single Correct Answer Type Questions) |55 Videos

  • TRIGONOMETRICAL IDENTITIES AND EQUATIONS

    MCGROW HILL PUBLICATION|Exercise SOLVED EXAMPLES (LEVEL 2 Single Correct Answer Type Questions) |32 Videos

  • THE DIMENSIONAL GEOMETRY

    MCGROW HILL PUBLICATION|Exercise QUESTIONS FROM PREVIOUS YEARS. B-ARCHITECTURE ENTRANCE EXAMINATION PAPERS|25 Videos

  • VECTOR ALGEBRA

    MCGROW HILL PUBLICATION|Exercise QUESTIONS FROM PREVIOUS YEARS. B-ARCHITECTURE ENTRANCE EXAMINATION PAPERS|20 Videos

Similar Questions

Explore conceptually related problems

Number of values of x lying in [0,2 pi] and satisfying the equation sin x+cos x=1, is

The number of values of x in [0,2pi] satisfying the equation 3cos2x-10cosx+7=0 is

The number of values of x in [0,5 pi] satisfying the equation 3cos^(2)x-10cos x+7=0

The number of values of x in [0, 5 pi] satisfying the equation 3"cos" 2x -10 "cos" x+7=0 , is

The number of values of x in [0,2 pi] satisfying the equation |cos x sin x|>=sqrt(2) is

Find the number of value of x in [0,5pi] satisying the equation 3 cos^2 x -10 cos x +7=0

The number of values of x in [-pi,pi] satisfying the equation 2(cos x+cos2x)+sin2x(1+2cos x)=2sin x is

The number of values of x in the interval [0,3 pi] satisfying the equation cos^(2)x+2cos x-2=0 is

MCGROW HILL PUBLICATION-TRIGONOMETRICAL IDENTITIES AND EQUATIONS -Questions from Previous Years. B-Architecture Entrance Examination Papers
  1. Number of values of x in [0, 2pi] and satisfying the equation cos ...

    Text Solution

    |

  2. The number of solutions of the equation tan x+secx=2cosx lying in the ...

    Text Solution

    |

  3. For theta pi 0, if cos theta+sec theta =2, then cos^(n)theta+sec^(n)th...

    Text Solution

    |

  4. If for real p the equation sin^(6)x+cos^(6)x=p always has a real solut...

    Text Solution

    |

  5. The value of "cos"^(4)(pi)/(8)+"cos"^(4)(3pi)/(8)+"cos"^(4)(5pi)/(8)+"...

    Text Solution

    |

  6. The value of "sin"(pi)/(14)*"sin"(3pi)/(14)*"sin"(5pi)/(14) is

    Text Solution

    |

  7. Let 0 lt alpha, beta le pi//4. If cos(alpha+beta)=4//5 and sin(alpha-b...

    Text Solution

    |

  8. The sides of a triangle are sin beta, cos beta and sqrt(1+a sin 2 beta...

    Text Solution

    |

  9. If cos25^(@)+sin25^(@)=K, when cos50^(@) equals

    Text Solution

    |

  10. tan9^(@)-tan27^(@)-tan63^(@)+tan81^(@) is equal to:

    Text Solution

    |

  11. If a and b are such that a sin theta=b cos theta for 0 le theta lt (pi...

    Text Solution

    |

  12. The value of tan 9^(@) - tan 27^(@)- tan 63^(@)+ tan 81^(@) is

    Text Solution

    |

  13. In a DeltaABC, if |(1,a,b),(1,c,b),(1,b,c)|=0 then sin^(2)A+sin^(2)...

    Text Solution

    |

  14. Let (3pi)/(4) lt theta lt pi and sqrt(2cot theta +(1)/(sin^(2)theta))...

    Text Solution

    |

  15. The maximum value of f(x)=2sin x+sin2x, in the interval [0, (3pi)/(...

    Text Solution

    |

  16. For all values of theta in (0, (pi)/(2)), the determinant of the matr...

    Text Solution

    |

  17. The value of (1)/(cos(285^(@)))+(1)/(sqrt(3)sin(255^(@))) is

    Text Solution

    |

  18. If e^((sin^(2)x+sin^(4)x+…+"ad inf.")log(e )2), (0 lt x lt pi//2), sat...

    Text Solution

    |

  19. The total number of x in [0, 2pi] which satisfy the equation 4(cos^(10...

    Text Solution

    |

  20. If cos (alpha+beta)=(4)/(5) and sin(alpha-beta)=(5)/(13), where alpha,...

    Text Solution

    |

  21. If sin(alpha-beta)=(5)/(13) and cos(alpha+beta)=(3)/(5), then tan(2alp...

    Text Solution

    |