Home
Class 11
MATHS
Value of the expression 2sinx-cos2x is...

Value of the expression 2sinx-cos2x is

A

greater than(-3/2)

B

equal to (-3/2)

C

less than (-3/2)

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A, B
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    PATHFINDER|Exercise QUESTION BANK|68 Videos

  • TRIGONOMETRIC RATIOS OF COMPOUND ANGLES

    PATHFINDER|Exercise QUESTIONBANK|25 Videos

Similar Questions

Explore conceptually related problems

Fill in the blanks The minimum value of the expression x^2+2x+3 is ______.

The value of the expression cos 1^(@)cos 2^(@) cos 3^(@)…cos 179^(@) is -

Find the value of the expression (7x-2) when x= -2.

For what values of x the function y=2sinx+cos2x(0ltxlt2pi) attains the maximum and minimum values?

The maximum value of the expression abs(sqrt((sin^2x+2a^2))-sqrt((2a^2-1-cos^2x)) where a and x are real number is

For what value of k the equation sinx+cos(k+x)+cos(k-x)=2 has real solutions?

Find the value of expression (cos(pi/2)+i sin(pi/2))(cos(pi/(2^2))+i sin(pi/(2^2)))......oo

The general solution of the equation sinx-3sin2x+sin3x=cosx-3cos2x+cos3x is

The maximum value of cos^2(45^0+x)+(sinx-cosx)^2 is ______

The number of solutions of the equation 1+cosx+cos2x+sinx+sin2x+sin3x=0, which satisfy the condition pi/2<|3x-pi/2|lt=pi is

PATHFINDER-TRIGONOMETRIC RATIOS AND IDENTITIES-QUESTION BANK
  1. prove that In an acute angled triangle ABC, secA+ secB+secCge6 is

    Text Solution

    |

  2. If Tn=sin^ntheta+ cos^ntheta, then (T6-T4)/T6=m holds for value of m s...

    Text Solution

    |

  3. Value of the expression 2sinx-cos2x is

    Text Solution

    |

  4. The range of function tan(pi/4sin^2x) must be

    Text Solution

    |

  5. The inequation 4sin3x+5ge4cos2x+5sinx

    Text Solution

    |

  6. If 7cosx-24sinx=dcos(x+alpha), oltalphaltpi/2, be true for all x in R,...

    Text Solution

    |

  7. Prove that abs(sinthetasin(60^@-theta)sin(60^@+theta)) le1/4 for all v...

    Text Solution

    |

  8. In a Delta ABC

    Text Solution

    |

  9. In a triangle tanA+tanB+tanC=6 and tanAtanB=2, then the values of tanA...

    Text Solution

    |

  10. 0ltthetaltpi/2, if x=sum(n=0)^inftycos^(2n)theta,y=sum(n=0)^inftysin^(...

    Text Solution

    |

  11. If tanalpha and tanbeta are the roots of the equation x^2+px+q=0 (pne0...

    Text Solution

    |

  12. Let f(theta, alpha)= 2sin^2theta+4cos(theta+alpha)sintheta.sinalpha+co...

    Text Solution

    |

  13. Let f(theta, alpha)= 2sin^2theta+4cos(theta+alpha)sintheta.sinalpha+co...

    Text Solution

    |

  14. Let f(theta) = sqrt(a^2cos^2theta+b^2sin^2theta) + sqrt(a^2sin^2theta+...

    Text Solution

    |

  15. Let f(theta) = sqrt(a^2cos^2theta+b^2sin^2theta) + sqrt(a^2sin^2theta+...

    Text Solution

    |

  16. If cos(pi/7), cos((3pi)/7), cos((5pi)/7) are the roots of the equation...

    Text Solution

    |

  17. If cos(pi/7), cos((3pi)/7), cos((5pi)/7) are the roots of the equation...

    Text Solution

    |

  18. Match List - I with List-II

    Text Solution

    |

  19. Match List - I with List-II

    Text Solution

    |

  20. If cosx+sinx=sqrt2cosx and cosx-sinx=k.sinx, then k^2=?

    Text Solution

    |