Home
Class 11
MATHS
2(sin^2theta+cos^2theta)-3(sin^4theta+co...

`2(sin^2theta+cos^2theta)-3(sin^4theta+cos^4theta)+1` is equal to a. 0 b.1 c.-2 d. none of these

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC EQUATION

    ALLEN|Exercise All Questions|86 Videos

Similar Questions

Explore conceptually related problems

2(sin^(6)theta+cos^(6)theta)-3(sin^(4)theta+cos^(4)theta) is equal to 0(b)1(c)-1(d) None of these

sin^2theta+cos^4theta=cos^2theta+sin^4theta

sin^(4)theta+cos^(4)theta=1-2sin^(2)theta cos^(2)theta

If cos^4theta-sin^4theta=2/3 then 2cos^2theta-1=

The value for 2(sin^(6)theta+cos^(6)theta)-3(sin^(4)theta+cos^(4)theta)+1 is

The value of (sin2 theta+sin4 theta)/(1+cos2 theta+cos4 theta) is equal to

The value of (1-2 sin^2 theta cos^2 theta )/(sin^4 theta +cos^4 theta )-1 is: (1-2 sin^2 theta cos^2 theta )/(sin^4 theta +cos^4 theta )-1 का मान है :

If 5tan theta=4, then (5sin theta-3cos theta)/(5sin theta+2cos theta) is equal to 0 (b) 1 (c) (1)/(6)(d)6

sin^4 theta=3/8-1/2cos2theta+1/8cos 4theta

ALLEN-TRIGONOMETRIC RATIOS AND IDENTITIES-All Questions
  1. If arcs of same length in two circles subtend angles of 60^0a n d75^0 ...

    Text Solution

    |

  2. If sintheta+sin^2theta=1, then prove that cos^(12)theta+3cos^(10) thet...

    Text Solution

    |

  3. 2(sin^2theta+cos^2theta)-3(sin^4theta+cos^4theta)+1 is equal to a. ...

    Text Solution

    |

  4. If sintheta=-1/2a n d\ t a ntheta=1/(sqrt(3))t h e n\ theta s equal t...

    Text Solution

    |

  5. Show that sqrt(3)\ cos e c\ 20^0-sec20^0=4.

    Text Solution

    |

  6. Prove that: t a n 70^0=t a n 20^0+2t a n 50^0dot

    Text Solution

    |

  7. If sin2A= lambda sin 2B prove that (tan(A+B)/tan(A-B))=(lambda+1)/(la...

    Text Solution

    |

  8. (sin5theta+sin2theta-sintheta)/(cos5theta+2cos3theta+2cos^2theta+costh...

    Text Solution

    |

  9. Prove that: sin 12^0sin 48^0sin 54^0=1/8dot

    Text Solution

    |

  10. Prove that (2cos2A+1)/(2cos2A-1)=tan(60^0+A)tan(60^0-A)dot

    Text Solution

    |

  11. Prove that :t a n A+tan(60^0+A)+tan(120^0+A)=3t a n3A

    Text Solution

    |

  12. sin (67(1)/2)^(@)+cos(67(1)/2)^(@) is equal to

    Text Solution

    |

  13. The value of sin 78^0-sin 66^0-sin 42^0+sin6^0 is -1 b. 1//2 c. -1//2 ...

    Text Solution

    |

  14. In any triangle A B C ,\ sin A-cos B=cos C ,\ the angle\ B is a.pi...

    Text Solution

    |

  15. If A+B+C=(3pi)/2 , then cos2A+cos2B+cos2C is equal to a.1-4cos Acos...

    Text Solution

    |

  16. Prove that 5costheta+3cos(theta+pi/3)+3 lies between -4 and 10.

    Text Solution

    |

  17. The maximum value of 1+sin(pi/4+theta)+2cos(pi/4-theta) for real value...

    Text Solution

    |

  18. Prove that t a n A+2t a n2A+4t a n4A+8cot8A=cot Adot

    Text Solution

    |

  19. sum(r=1)^(n-1)cos^2((rpi)/n)

    Text Solution

    |

  20. Prove that: (1+sec2theta)(1+sec4theta)(1+sec8theta)(1+sec2^ntheta)=t a...

    Text Solution

    |