Home
Class 11
MATHS
Express each of the following as the sum...

Express each of the following as the sum or difference of sines and cosines: `\ 2sin4thetasin3theta`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • THE STRAIGHT LINES

    RD SHARMA ENGLISH|Exercise All Questions|493 Videos

  • TRIGONOMETRIC EQUATIONS

    RD SHARMA ENGLISH|Exercise All Questions|120 Videos

Similar Questions

Explore conceptually related problems

Express each of the following as the sum or difference of sines and cosines: \ 2cos3thetasin2theta

Express each of the following as the sum or difference of sines and cosines: 2sin3thetacostheta

Express each of the following as the sum or difference of sines and cosines: \ 2cos7thetacos3theta

Convert each of the following products into the sum or difference of sines and cosines: \ 2sin3thetasintheta

Convert each of the following products into the sum or difference of sines and cosines: 2cos4thetacos3theta

Convert each of the following products into the sum or difference of sines and cosines: 2sin5theta\ costheta

Express each of that as the sum or difference of cosines and sines: 5 sin theta.sin 8theta

Express each of the following as the product of sines and cosines: sin 12theta+sin4theta

Express each of that as the sum or difference of cosines and sines: cos 75^@Cos 15^0

Express each of the products into sums or difference of sines and cosines : 2cos 9theta. Cos 4theta

RD SHARMA ENGLISH-TRANSFORMATION FORMULAE-All Questions
  1. Prove that 4sinthetasin(pi/3+theta)sin((2pi)/3+theta)=sin3theta

    Text Solution

    |

  2. Express each of the following as the sum or difference of sines and ...

    Text Solution

    |

  3. Express each of the following as the sum or difference of sines and ...

    Text Solution

    |

  4. Express each of the following as the sum or difference of sines and ...

    Text Solution

    |

  5. Express each of the following as the sum or difference of sines and ...

    Text Solution

    |

  6. Prove that; 2sin((5pi)/12)sin(pi/12)=1/2

    Text Solution

    |

  7. Prove that 2sin((5pi)/12)cos(pi/12)=(2+sqrt3)/2

    Text Solution

    |

  8. Find the value of 2cos((5pi)/12) cos(pi/12) and 2sin((5pi)/12)cos(pi/1...

    Text Solution

    |

  9. Show that: sin 50^0cos85^0=(1-sqrt(2)sin35^0)/(2sqrt(2))

    Text Solution

    |

  10. sin25^@cos115^@=1/2(sin40^@-1)

    Text Solution

    |

  11. Prove that: 4\ costhetacos\ (pi/3+theta)cos(pi/3-theta)=cos3theta

    Text Solution

    |

  12. Prove that: cos 10^0cos30^0cos 50^0cos 70^0=3/(16)

    Text Solution

    |

  13. Prove that: sin20^0sin40^0sin80^0=(sqrt(3))/8

    Text Solution

    |

  14. Prove that: t a n 20^0tan40^0tan60^0tan80^0=3

    Text Solution

    |

  15. Prove that: \ sin 10^0sin 50^0sin 60^0sin 70^0=(sqrt(3))/(16)

    Text Solution

    |

  16. Prove that: cos40^0cos80^0cos 160^0=\ -1/8

    Text Solution

    |

  17. Prove that: \ cos 20^0cos 40^0cos 80^0=1/8

    Text Solution

    |

  18. Prove that: \ t a n 20^0t a n 30^0t a n 40^0t a n 80^0=1

    Text Solution

    |

  19. Prove that: sin20^0sin40^0sin60^0sin80^0=3/(16)

    Text Solution

    |

  20. Prove that: (sin5A-sin3A)/(cos5A+cos3A)=t a n A

    Text Solution

    |