Home
Class 12
MATHS
The solution of the equation cos^2theta+...

The solution of the equation `cos^2theta+sintheta+1=0` lies in the interval

A

`(-(pi)/(4),(pi)/(4))`

B

`((pi)/(4),(3pi)/(4))`

C

`((3pi)/(4),(5pi)/(4))`

D

`((5pi)/(4),(7pi)/(4))`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    TARGET PUBLICATION|Exercise Evaluation Test|34 Videos

  • TRIGONOMETRIC FUNCTIONS

    TARGET PUBLICATION|Exercise Critical Thinking|88 Videos

  • THREE DIMENSIONAL GEOMETRY

    TARGET PUBLICATION|Exercise Evaluation Test|9 Videos

  • VECTORS

    TARGET PUBLICATION|Exercise Evaluation Test|18 Videos

Similar Questions

Explore conceptually related problems

The solution of the equation cos^(2)theta+sin theta+1=0 lies in the interval

One root of the equation "cos" theta-theta + (1)/(2) = 0 lies in the interval

The number of solutions of the equation "cos"^(7) theta + "sin"^(4) theta = 1 in the interval (-pi, pi) , is

Write the solution set of the equation (2cos theta+1)(4cos theta+5)=0 in the interval [0,2 pi]

The number of solutions of the equation 2tan^(2)theta-7sec theta-2=0 in the interval [0,6 pi] is

The number of roots of equation cos^(7)theta - sin^(4)theta = 1 that lie in the interval [0,2pi] is-

Let p,qin N and q gt p , the number of solutions of the equation q|sin theta |=p|cos theta| in the interval [0,2pi] is

The solution of the equation 1-"cos" theta = "sin" theta "sin" (theta)/(2) is

TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS -Competitive Thinking
  1. The number of solutions of equation tanx+secx=2cosx lying in the inter...

    Text Solution

    |

  2. If "tan" (pi "cos" theta) = "cot"(pi "sin" theta), then the value(s) ...

    Text Solution

    |

  3. The solution of the equation cos^2theta+sintheta+1=0 lies in the inter...

    Text Solution

    |

  4. The number of values of theta in [ 0, 2pi] satisfying the equation 2si...

    Text Solution

    |

  5. The number of integral values of a for which the equation cos2x+asinx=...

    Text Solution

    |

  6. If (1+tantheta)(1+tanphi)=2 then theta+phi=

    Text Solution

    |

  7. If (1+tanalpha)(1+tan4alpha)=2,alpha in (0,pi/(16)), then alpha is equ...

    Text Solution

    |

  8. The solution set of the system of equations x+y=(2pi)/3,cosx+cosy=3/2,...

    Text Solution

    |

  9. if 0<=x<=pi and 81^(sin^2x)+81^(cos^2x)=30 then x=

    Text Solution

    |

  10. If 4sin^4x+cos^4x=1,t h e nxi se q u a lto(n in Z) npi (b) npi+-sin...

    Text Solution

    |

  11. The root of the equation 1-costheta=sintheta*"sin"(theta)/(2) is

    Text Solution

    |

  12. If the general solution of sin5x=cos2x is of the form an.pi/2 for n=0,...

    Text Solution

    |

  13. General solution of tantheta=cot2theta is

    Text Solution

    |

  14. Find the most general value of theta satisfyingn the equation tanthet...

    Text Solution

    |

  15. If tantheta=-(1)/(sqrt(3)),sintheta=(1)/(2)andcostheta=-(sqrt(3))/(2),...

    Text Solution

    |

  16. If cosptheta=cosqtheta, pneq, then

    Text Solution

    |

  17. If (2cosx-1)(3+2cosx)=0, 0lexle2pi, then x=

    Text Solution

    |

  18. If sin((pi)/(4)costheta)=cos((pi)/(4)tantheta), then theta is equal to

    Text Solution

    |

  19. If tan2thetatantheta=1, then the general value of theta is

    Text Solution

    |

  20. The general value theta obtained from the equation cos3theta=sinalpha ...

    Text Solution

    |