Home
Class 11
MATHS
Prove that: sin 12^0sin 48^0sin 54^0=1/8...

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

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC EQUATION

    ALLEN|Exercise All Questions|86 Videos

Similar Questions

Explore conceptually related problems

Prove that: sin12^(@)sin48^(@)sin54^(@)=1/8

Prove that: sin12^(0)sin48^(0)sin54^(@)=(1)/(8)

sin12^(0)sin48^(@)sin54^(@)=

sin12^(@)sin48^(@)sin54^(@)=

Find sin12^@ sin48^@ sin54^@

Without using tables,prove that (sin12^(0))(sin48^(@))(sin54^(@))=(1)/(8)

Without using tables,prove that (sin12^(@))(sin48^(@))(sin54^(@))=(1)/(8)

Prove that: sin10^(0)sin30^(0)sin50^(@)sin70^(@)=(1)/(16)

ALLEN-TRIGONOMETRIC RATIOS AND IDENTITIES-All Questions
  1. If sin2A= lambda sin 2B prove that (tan(A+B)/tan(A-B))=(lambda+1)/(la...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  15. To find sum of tangents of a series of angles, the angles being in Ari...

    Text Solution

    |

  16. S=cosecx+cosec 2x+cosec 4x+…+cosec 2nx=cot(x/2)−cot2nx

    Text Solution

    |

  17. The expression (tan(x-pi/2)cos((3pi)/2+x)-sin^3((7pi)/2-x))/(cos(x-pi/...

    Text Solution

    |

  18. The values of cos^2 73^0+cos^2 47^0-sin^2 43^0+sin^2 107^0 is equal t...

    Text Solution

    |

  19. The expression (sin 22^0cos8^0+cos 158^0cos98^0)/(sin 23^0cos7^0+cos 1...

    Text Solution

    |

  20. The two legs of a right triangle are sin theta +sin ((3pi)/2-theta) an...

    Text Solution

    |