Home
Class 11
MATHS
Prove the following: (cos4x + cos3x + co...

Prove the following: `(cos4x + cos3x + cos2x)/(sin4x + sin 3x + sin 2x)= cot 3x`

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Prove the following : (cos 7x + cos 5x)/(sin 7x-sin 5x) =cot x .

Prove the following: cos 4x = 1 - 8sin^2 x cos^2 x

Prove the following: cos^2 2x - cos^2 6x = sin 4x sin 8x

Prove that (cos5x - cosx)/(sin5x - 2sin3x + sinx) = cotx

Prove the following: (sin5x + sin 3x)/(cos5x + cos3x)=tan4x

Prove the following: cot 4x (sin 5x + sin 3x) = cot x (sin 5x -sin 3x)

Prove the following: (sin x -sin 3x)/(sin^2 x -cos^2 x)= 2sinx

Prove the following: (cos9x -cos5x)/(sin17x-sin3x)=-(sin2x)/(cos10x)

Prove the following: (sinx + sin3x)/(cosx + cos3x)=tan 2x

Prove the following: sin2 x + 2 sin 4x + sin 6x = 4 cos^2 x sin 4x

PSEB-TRIGONOMETRIC FUNCTIONS-EXERCISE
  1. Prove the following: (sinx + sin3x)/(cosx + cos3x)=tan 2x

    Text Solution

    |

  2. Prove the following: (sin x -sin 3x)/(sin^2 x -cos^2 x)= 2sinx

    Text Solution

    |

  3. Prove the following: (cos4x + cos3x + cos2x)/(sin4x + sin 3x + sin 2x)...

    Text Solution

    |

  4. Prove the following: cot x cot 2x -cot 2x cot 3x -cot 3x cot x = 1

    Text Solution

    |

  5. Prove the following: tan 4x =(4tan x (1-tan^2x))/(1-6 tan^2x + tan^4x)

    Text Solution

    |

  6. Prove the following: cos 4x = 1 - 8sin^2 x cos^2 x

    Text Solution

    |

  7. Prove the following: cos 6x = 32 cos^6 x -48cos^4 x + 18 cos^2 x - 1

    Text Solution

    |

  8. Find the principal and general solutions of the following equation:- t...

    Text Solution

    |

  9. Find the principal and general solutions of the following equation:- s...

    Text Solution

    |

  10. Find the principal and general solutions of the following equation:- c...

    Text Solution

    |

  11. Find the principal and general solutions of the following equation:- c...

    Text Solution

    |

  12. Find the general solution of the following equations: cos 4 x = cos 2x

    Text Solution

    |

  13. Find the general solution of the following equations: cos 3x + cosx- c...

    Text Solution

    |

  14. Find the general solution of the following equations: sin 2x + cosx = ...

    Text Solution

    |

  15. Find the general solution of the following equations: sec^2 2x = 1- ta...

    Text Solution

    |

  16. Find the general solution of the following equations: sin x + sin 3x +...

    Text Solution

    |

  17. Prove that: 2cos frac (pi)(13)cos frac (9pi)(13)+cos frac (3pi)(13)+co...

    Text Solution

    |

  18. Prove that: (sin 3x + sin x) sin x + (cos 3x -cos x) cos x = 0

    Text Solution

    |

  19. Prove that: (cos x + cos y)^2 + (sin x -sin y)^2 = 4 cos^2frac (x+y)(2...

    Text Solution

    |

  20. Prove that: (cosx-cosy)^2 +(sinx-siny)^2=4 sin^2frac (x-y)(2)

    Text Solution

    |