Home
Class 11
MATHS
Prove that: sin3x=3sinx-4sin^3x...

Prove that: sin3x=3sinx-4sin^3x

Promotional Banner

Topper's Solved these Questions

  • TRIGNOMETRIC FUNCTIONS

    JBD PUBLICATION|Exercise EXAMPLE|67 Videos

  • STRAIGHT LINES

    JBD PUBLICATION|Exercise EXAMPLE|39 Videos

Similar Questions

Explore conceptually related problems

Prove that sin4x = 4sinx cos^3x - 4cosx sin^3x

Prove that (sin3x + sinx)sinx + (cos3x - cosx)cosx = 0

Prove that: sin 3x + sin 2x -sin x = 4sin x cosfrac(x)(2)cosfrac(3x)(2)

Prove that sin7x + sin5x + sin3x + sinx = 4cosx cos2x sin4x

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

Prove that: (sinx +sin3x)/(cosx+cos3x)=tan2x

Prove that: sin x + sin 3x + sin 5x + sin 7x= 4 cos x cos 2x sin 4x

Prove that sin2x + sin8x = 2sin5x cos3x

Prove that (sinx - sin3x)/(cos^2x - sin^2x) = -2sinx

Prove that (cos^3x - sin^3x)/(cosx - sinx) = (2 + sin2x)/2

JBD PUBLICATION-TRIGNOMETRIC FUNCTIONS-EXAMPLE
  1. Find the solutions of the equation sinx=-sqrt3/2 when x in [0,pi]

    Text Solution

    |

  2. Prove that:(cos7x+cos5x)/(sin7x-sin5x)=cotx

    Text Solution

    |

  3. Prove that: sin3x=3sinx-4sin^3x

    Text Solution

    |

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

    Text Solution

    |

  5. Find the radian measures corresponding to the following degree measure...

    Text Solution

    |

  6. Find the radian measures corresponding to the followind degree measure...

    Text Solution

    |

  7. A wheel makes 360 revolutions in one minute. Through how many radians ...

    Text Solution

    |

  8. A circular wire of radius 7.5 cm is cut and bent so as to lie along th...

    Text Solution

    |

  9. Find the values of other five trignometrtic functions in each of the f...

    Text Solution

    |

  10. Find the values of other five trignometrtic functions in each of the f...

    Text Solution

    |

  11. Find the values of the trignometric functions in the following: cosec(...

    Text Solution

    |

  12. Find the values of the trignometric functions in the following: tan (1...

    Text Solution

    |

  13. Find the values of: sin((-11pi)/3)

    Text Solution

    |

  14. Show that no value of theta can satisfy the equations: 6 sec^2theta-5s...

    Text Solution

    |

  15. Find the value of: cos((5pi)/12)

    Text Solution

    |

  16. Find the value of: tan((13pi)/12)

    Text Solution

    |

  17. Prove the following: cos(pi/4-x)cos(pi/4-y)-sin(pi/4-x)sin(pi/4-y)= si...

    Text Solution

    |

  18. Prove the following: sin^2 6x-sin^2 4x = sin 2x sin 10x

    Text Solution

    |

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

    Text Solution

    |

  20. Show that: tan5x-tan3x-tan2x=tan5xtan3xtan2x

    Text Solution

    |