Home
Class 12
MATHS
sin65^(@)+sin43^(@)-sin29^(@)-sin7^(@) i...

`sin65^(@)+sin43^(@)-sin29^(@)-sin7^(@)` is equal to

A

`cos36^(@)`

B

`cos 18^(@)`

C

`cos9^(@)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    OBJECTIVE RD SHARMA|Exercise Chapter Test|60 Videos

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    OBJECTIVE RD SHARMA|Exercise Section II - Assertion Reason Type|13 Videos

  • TRIGONOMETRIC EQUATIONS AND INEQUATIONS

    OBJECTIVE RD SHARMA|Exercise Chapter Test|60 Videos

Similar Questions

Explore conceptually related problems

sin65^(@)+sin25^(@)=

The value of sin 10^(@) sin 30^(@) sin 50^(@) sin 70^(@) is equal to .

sin 12^(@) sin 48^(@) sin 54^(@) is equal to

The value of sin3^(@)sin27^(@)sin33^(@)sin57^(@)sin63^(@)sin87^(@) can be equal to -

Exact value of cos73^(@)+cos^(2)47^(@)-sin^(2)43^(@)+sin^(2)107^(@) is equal to:

cos^(2)73^(@)+cos^(2)47^(@)-sin^(2)43^(@)+sin^(2)107^(@) is equal to

The value of sin10^(@)+sin20^(@)+sin30^(@)...+sin360^(@) is equal to -

OBJECTIVE RD SHARMA-TRIGONOMETRIC RATIOS AND IDENTITIES-Exercise
  1. sec theta=(a^(2)+b^(2))/(a^(2)-b^(2)), where a, binR, gives real balue...

    Text Solution

    |

  2. If 0^@ltthetalt180^@ then sqrt(2+sqrt(2+sqrt(2+...+sqrt(2(1+costheta))...

    Text Solution

    |

  3. sin65^(@)+sin43^(@)-sin29^(@)-sin7^(@) is equal to

    Text Solution

    |

  4. If sec alpha and cosec alpha are the roots of the equation x^(2)-ax+b=...

    Text Solution

    |

  5. The value of the expression 3(sinx-cosx)^(4)+4(sin^(6)x+cos^(6)x)+6(s...

    Text Solution

    |

  6. If cos(alpha+beta)sin(gamma+delta)=cos(alpha-beta)sin(gamma-delta) the...

    Text Solution

    |

  7. sin^(2)5^@+sin^(2)10^@+sin^(2)15^@ +.......+sin^(2)85^@ + sin^(2)90^@=

    Text Solution

    |

  8. If sinx+sin^2x=1, then find the value of cos^(12)x +3cos^(10)x + 3 cos...

    Text Solution

    |

  9. If ABCD is a cyclic quadrilateral, then the value of cosA-cosB+cosC-co...

    Text Solution

    |

  10. If ABCD, is a cycling quadrilateral such that tanA-5=0and 5cosB+3=0, t...

    Text Solution

    |

  11. If sin (picot theta)=cos (pi tantheta), then

    Text Solution

    |

  12. The value of sinx siny sin(x-y)+sinysinz sin(y-z) +sinz sinx sin(z-x)+...

    Text Solution

    |

  13. If ABCD is a convex quadrilateral such that 4 sec A+5 =0 then the quad...

    Text Solution

    |

  14. If (tanalpha+tanbeta)/(cot alpha+cot beta)+{cos(alpha-beta)+1}^(-1)=1,...

    Text Solution

    |

  15. cos(pi/15)cos((2pi)/15)cos((3pi)/15)cos((4pi)/15)cos((5pi)/15)cos((6pi...

    Text Solution

    |

  16. The value of cos12^(@)cos24^(@)cos36^(@)cos48^(@)cos72^(@)cos84^(@), i...

    Text Solution

    |

  17. The value of sin""(15pi)/(32)sin""(7pi)/(16)sin""(3pi)/(8), is

    Text Solution

    |

  18. sum(r=1)^(n-1)cos^(2)""(rpi)/(n) is equal to

    Text Solution

    |

  19. The value of cot theta-tantheta-2tan2theta-4tan4theta-8cot8theta, is

    Text Solution

    |

  20. If cos(x-y), cosx and cos(x+y) are in H.P., then cos x sec (y/2) equal...

    Text Solution

    |