Home
Class 11
MATHS
Prove that, cos510^(@)cos330^(@)+sin390^...

Prove that, `cos510^(@)cos330^(@)+sin390^(@)cos120^(@)=-1`.

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    KUMAR PRAKASHAN|Exercise TEXTBOOK BASED MCQS|60 Videos

  • TRIGONOMETRIC FUNCTIONS

    KUMAR PRAKASHAN|Exercise TEXTBOOK ILLUSTRATIONS FOR PRACTICE WORK|33 Videos

  • TRIGONOMETRIC FUNCTIONS

    KUMAR PRAKASHAN|Exercise MISCELLANEOUS EXERCISE : 3|10 Videos

  • STRAIGHT LINES

    KUMAR PRAKASHAN|Exercise Question of Module (Knowledge Test :)|18 Videos

Similar Questions

Explore conceptually related problems

Prove that, cos80^(@)+cos40^(@)-cos20^(@)=0

Prove that, cos105^(@)+cos15^(@)=sin75^(@)-sin15^(@)

Prove that, cos20^(@)+cos60^(@)+cos100^(@)+cos140^(@)=(1)/(2)

Prove that, cos55^(@)+cos65^(@)+cos175^(@)=0

Show that : cos38^(@)cos52^(@)-sin38^(@)sin52^(@)=0

Prove that, sin51^(@)+cos81^(@)=cos21^(@)

Prove that : (cos80^(@))/(sin10^(@))+cos59^(@)cosec31^(@)=2

Prove that, cos18^(@)-sin18^(@)=sqrt(2)sin27^(@)

Prove that, sin65^(@)+cos65^(@)=sqrt(2)cos20^(@)

Evaluate the following : sin60^(@)cos30^(@)+sin30^(@)cos60^(@)

KUMAR PRAKASHAN-TRIGONOMETRIC FUNCTIONS -PRACTICE WORK
  1. Find the value of other five trigonometric function. sin theta=-(2sq...

    Text Solution

    |

  2. Find the value of other five trigonometric function. cotx=-(5)/(12),...

    Text Solution

    |

  3. Prove that, cos510^(@)cos330^(@)+sin390^(@)cos120^(@)=-1.

    Text Solution

    |

  4. Prove that, sin((8pi)/(3))cos((23pi)/(6))+cos((13pi)/(3))sin((35pi)/...

    Text Solution

    |

  5. Prove that, sin^(2)((pi)/(18))+sin^(2)((pi)/(9))+sin^(2)((7pi)/(18))...

    Text Solution

    |

  6. Find the value of x. cosec(90^(@)+theta)+xcosthetacot(90^(@)+theta)=...

    Text Solution

    |

  7. Find the value of x. xcot(90^(@)+theta)+tan(90^(@)+theta)sintheta+co...

    Text Solution

    |

  8. Find the value of following trigonometric function. tan(-585^(@))

    Text Solution

    |

  9. Find the value of following trigonometric function. sin(4530^(@))

    Text Solution

    |

  10. Find the value of following trigonometric function. tan((11pi)/(6))

    Text Solution

    |

  11. Find the value of following trigonometric function. cos(1755^(@))

    Text Solution

    |

  12. Find the value of following trigonometric function. sin(-330^(@))

    Text Solution

    |

  13. Prove that cos((3pi)/(2)+x)cos(2pi+x).{cot((3pi)/(2)-x)+cot(2pi+x)}=1

    Text Solution

    |

  14. Find the value of sin(135^(@))cosec(225^(@))tan(150^(@))cot(315^(@))

    Text Solution

    |

  15. Prove that, 3sin((pi)/(6))sec((pi)/(3))-4sin((5pi)/(6))cot((pi)/(4))...

    Text Solution

    |

  16. Prove tan((11pi)/(3))-2sin((4pi)/(6))-((3)/(4))cosec^(2)((pi)/(4))+4co...

    Text Solution

    |

  17. Find the value of cos75^(@)

    Text Solution

    |

  18. Find the value of tan75^(@)

    Text Solution

    |

  19. Find the value of sin15^(@)

    Text Solution

    |

  20. Find the value of sec105^(@)

    Text Solution

    |