Home
Class 11
MATHS
sin(5theta)/sintheta is equal to a.16cos...

`sin(5theta)/sintheta` is equal to `a.16cos^4theta-12cos^2theta+1, b.16cos^4theta+12cos^2theta+1, c.16cos^4theta-12cos^2theta-1, d.16cos^4theta+12cos^2theta-1`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC RATIOS OF COMPOUND ANGLES

    RD SHARMA ENGLISH|Exercise All Questions|149 Videos

Similar Questions

Explore conceptually related problems

If sintheta+sin^2theta=1 ,find the value of cos^(12)theta+3cos^(10)theta+3cos^8theta+cos^6theta+2cos^4theta+2cos^2theta-2

Prove that 1+cos^2 2theta=2(cos^4theta+sin^4theta)

2(1-2sin^2 7theta)sin3theta is equal to a.\ sin 17theta-sin 11theta b. sin 11theta-sin 17theta c. cos 17theta-cos 11theta d. cos 17theta+cos 11theta

Prove that: 1+cos^2 2theta=2(cos^4theta+sin^4theta)

(1+sin2theta+cos2theta)/(1+sin2theta-cos2theta)=?

Range of f(theta)=cos^2theta(cos^2theta+1)+2sin^2theta is

If sintheta+sin^2theta=1, then prove that cos^(12)theta+3cos^(10)theta+3cos^8theta+cos^6theta-1=0 Given that sintheta=1-sin^2theta=1-sin^2theta=cos^2theta

If sintheta+sin^2theta=1, then prove that cos^(12)theta+3cos^(10) theta+3cos^8theta+cos^6theta-1=0

Prove the following identities: 2(sin^6theta+cos^6theta)-3(sin^4theta+cos^4theta)+1=0 sin^6theta+cos^6theta+3sin^2thetacos^2theta=1 (sin^8theta-cos^8theta)=(sin^2theta-cos^2theta)(1-2s in^2thetacos^2theta)

Prove that 16 cos ^(5) theta - 20 cos ^(3) theta + 5 cos theta = cos 5 theta.

RD SHARMA ENGLISH-TRIGONOMETRIC RATIOS OF MULTIPLE AND SUBMULTIPLE ANGLES-All Questions
  1. Prove that: cos(pi/7)cos(2pi/7)cos(4pi/7)=-1/8,

    Text Solution

    |

  2. If sin x+cos x=a , find the value of sin^6x+cos^6xdot

    Text Solution

    |

  3. If sin x+cos x=a , find the maximum and minimum value of a

    Text Solution

    |

  4. 8*sin(x/8)*cos(x/2)*cos(x/4)*cos(x/8)=

    Text Solution

    |

  5. Show that cos(pi/65)cos((2pi)/65)cos((4pi)/65)cos((8pi)/65)cos((16pi)/...

    Text Solution

    |

  6. For all real values of x ,cotx-2cot2x is equal to a.tan2x b. t a n x c...

    Text Solution

    |

  7. The value of 2tanpi/(10)+3secpi/(10)-\ 4cospi/(10) is 0 b. 1 c. sqrt(5...

    Text Solution

    |

  8. If in a Delta ABC, tanA+tanB+tanC=6 then cotA cotB cot C= a.6, b. 1, c...

    Text Solution

    |

  9. If sin alpha+sin beta=a\ a n d\ cosalpha-cosbeta=b , then tan(alpha-be...

    Text Solution

    |

  10. The value of t a nthetasin(pi/2+theta)cos(pi/2-theta) is -1 b. 1 c. ...

    Text Solution

    |

  11. Prove that: sin^2pi/(18)+sin^2pi/9+sin^2(7pi)/(18)+sin^2(4pi)/9=2

    Text Solution

    |

  12. If A=2sin^2theta-cos2theta, t h e n A lies in the interval (a)[-1,3] ...

    Text Solution

    |

  13. The value of cos^2(pi/6+theta)-sin ^2\ (pi/6-theta) is (a)dot 1/2cos\...

    Text Solution

    |

  14. The value of (cos3theta)/(2cos2theta-1) is equal to (a) costheta (b) ...

    Text Solution

    |

  15. The value of (2(sin2theta+2cos^2theta-1))/(costheta-sintheta-cos3theta...

    Text Solution

    |

  16. 2(1-2sin^2 7theta)sin3theta is equal to a.\ sin 17theta-sin 11theta b....

    Text Solution

    |

  17. cos(36^@-A)cos(36^@+A)+cos(54^@+A)cos(54^@-A)=cos2A

    Text Solution

    |

  18. Prove that: t a nthetatan(60^0-theta)tan(60^0+theta)=tan3thetadot

    Text Solution

    |

  19. tantheta+tan(6 0^0+theta)+tan(12 0^0+theta)=3tan3theta

    Text Solution

    |

  20. sin(5theta)/sintheta is equal to a.16cos^4theta-12cos^2theta+1, b.16co...

    Text Solution

    |