Home
Class 12
MATHS
Show that cos 340^(@) cos 40^(@)+sin 200...

Show that `cos 340^(@) cos 40^(@)+sin 200^(@) sin 140^(@) = 1/2`.

Promotional Banner

Topper's Solved these Questions

  • IPE SCANNER (TEXUAL BITS)

    SRISIRI PUBLICATION|Exercise Very Short Questions (2 marks) (Hyperbolic Functions)|23 Videos

  • IPE SCANNER (TEXUAL BITS)

    SRISIRI PUBLICATION|Exercise Very Short Questions (2 marks) (Product of vectors )|73 Videos

  • IPE SCANNER (TEXTUAL BITS)

    SRISIRI PUBLICATION|Exercise APPLICATIONS OF DERIVATIVES|48 Videos

  • IPE-MARCH-2016[TS]

    SRISIRI PUBLICATION|Exercise Section-c(III . Answer any five of the following LAQs:)|6 Videos

Similar Questions

Explore conceptually related problems

Show that cos 36^(@) cos 54 ^(@) -sin 36^(@) sin 54^(@) =0

Show that : cos 36^(@) cos 54^(@) - sin 36^(@) sin 54^(@) = 0 .

S.T cos340^(@) . Cos40^(@)+sin200^(@).sin140^(@)=(1)/(2)

cos 70^(@) + sin 40^(@)=

Simplify cos 100^(@) cos 40^(@) + sin 100^(@) sin 40^(@) .

Simplify cos 100^(@) cos 40^(@) +sin 100^(@) sin 40^(@)

Show that sin 1140^(@) cos 390^(@)-cos 780^(@) sin 750^(@) = 1//2 .

cos70^(@)+sin40^(@)=

sin 70^@ - cos 40^(@) =

Show that sin 750 ^(@) cos 480^(@) + cos 120 ^(@) cos 60 ^(@)=-1/2

SRISIRI PUBLICATION-IPE SCANNER (TEXUAL BITS)-Very Short Questions (2 marks) (Trigonometric Ratios, Transformations)
  1. S.Tcot.(pi)/(16).cot.(2pi)/(16).cot.(3pi)/(16).....cot.(7pi)/(16)=1

    Text Solution

    |

  2. If cos theta + sin theta = sqrt(2) cos theta then S.T cos theta - sin ...

    Text Solution

    |

  3. Show that cos 340^(@) cos 40^(@)+sin 200^(@) sin 140^(@) = 1/2.

    Text Solution

    |

  4. Find the value of tan 100^(@)+tan125^(@)+tan 100^(@). Tan 125^(@).

    Text Solution

    |

  5. Find the value of tan 10^(@) + tan 35^(@) + tan 10^(@) . tan 35^(@)

    Text Solution

    |

  6. Prove that tan 50^(@) -tan40^(@)-2tan10^(@).

    Text Solution

    |

  7. Show that cos 42^(@) + cos 78^(@) + cos 162^(@) = 0

    Text Solution

    |

  8. Prove that (cos9^(@)+sin9^(@))/(cos9^(@)-sin9^(@))=cot36^(@)

    Text Solution

    |

  9. Find the period of f(x)=cos ((4x+9)/(5))

    Text Solution

    |

  10. Find the value of cos^(2)52(1^@)/(2) - sin^(2)22 (1^@)/2

    Text Solution

    |

  11. Find the period of tan(x+4x+9x+.......+n^2x) (n any positive integer)

    Text Solution

    |

  12. Find a cosine function whose period is 7.

    Text Solution

    |

  13. Find a sine function whose period is 2//3.

    Text Solution

    |

  14. Find the maximum and minimum value of f(x) = 5sinx + 12cos x -13.

    Text Solution

    |

  15. Show that cot.(pi)/(20). cot .(3pi)/(20). cot.(5pi)/(20). cot .(7pi)...

    Text Solution

    |

  16. Find the value of sin^(2)""(pi)/(10)+sin^(2)""(4pi)/(10)+sin^(2)""(6pi...

    Text Solution

    |

  17. Show that cos^(2)""(pi)/(10)+cos^(2)""(4pi)/(10)+cos^(2)""(6pi)/10+cos...

    Text Solution

    |

  18. Evaluate cos^(2)45^(@)+cos^(2)135^(@)+cos^(2)225^(@)+cos^(2)315^(@).

    Text Solution

    |

  19. If tan20^(@) = lambda then show that (tan 160^(@) -tan 110^(@))/(1+tan...

    Text Solution

    |

  20. If tan20^(@)=p then prove that = (tan610^(@)+tan700^(@))/(tan 560^(@)-...

    Text Solution

    |