Home
Class 12
MATHS
The value of cos 15^(@)cos 7(1^(@))/(2)s...

The value of `cos 15^(@)cos 7(1^(@))/(2)sin 7(1^(@))/(2)` is

A

`(1)/(2)`

B

`(1)/(8)`

C

`(1)/(4)`

D

`(1)/(16)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2015

    WB JEE PREVIOUS YEAR PAPER|Exercise MULTIPLE CHOICE QUESTIONS|80 Videos

  • QUESTION PAPER 2017

    WB JEE PREVIOUS YEAR PAPER|Exercise Multiple Choice Questions|75 Videos

Similar Questions

Explore conceptually related problems

The value of cos15^(@)cos7(1^(@))/(2)sin7(1^(@))/(2) is

The value of (cos 15^(@) -sin 15^(@)) is-

The value of cos15^@-sin15^@ is

The value of (cos ^(6)5^(@)-15 cos ^(4) 5^(@) sin ^(2)5^(@)+15 cos ^(2)5^(@)sin ^(4) 5^(@)-sin ^(6)5^(@)) is equal to-

The value of cos[cos^(-1)(-(1)/(7))+sin^(-1)(-(1)/(7))] is -

The value of sin(cos^(-1)x)-cos(sin^(-1)x) is

The value of sin((1)/(2)"cos"^(-1)(4)/(5)) is -

The value of sin(cos^(-1)x)-cos(sin^(-1)x) is-

If sin x + sin ^(2) x=1 then the value of (cos ^(8) x+2 cos ^(6)x +cos ^(4) x) is-

The value of tan{(cos^(- 1)(-2/7)-pi/2)] is

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2016-MULTIPLE CHOICE QUESTIONS
  1. Standard Deviation of n observations a(1), a(2), a(3),….a(n) is sigma....

    Text Solution

    |

  2. Let A and B be two events such that P(A nn B)=(1)/(6),P(A uu B)=(31)/(...

    Text Solution

    |

  3. The value of cos 15^(@)cos 7(1^(@))/(2)sin 7(1^(@))/(2) is

    Text Solution

    |

  4. The smallest positive root of the equation tan x-x=0 lies in

    Text Solution

    |

  5. If in a triangle ABC, AD, BE and CF are the altitudes and R is the cir...

    Text Solution

    |

  6. The points (-a,-b),(a,b),(0,0) and (a^(2),ab), a ne 0, b ne 0 are alwa...

    Text Solution

    |

  7. The line AB cuts off intercepts 2a from the axes. From any point. P on...

    Text Solution

    |

  8. x+8y-22=0, 5x+2y-34=0, 2x-3y+13=0 are the three sides of a triangle. T...

    Text Solution

    |

  9. The line through the points (a, b) and (-a, -b) passes through the poi...

    Text Solution

    |

  10. The locus of the point of intersection of the straight lines (x)/(a)+(...

    Text Solution

    |

  11. The equation of a line parallel to the line 3x+4y=0 and touching the c...

    Text Solution

    |

  12. A line passing through the point of intersection of x+y=4 and x-y=2 ma...

    Text Solution

    |

  13. The equation of auxiliary circle of the ellipse 16x^(2)+25y^(2)+32x-10...

    Text Solution

    |

  14. If PQ is a double ordinate of the hyperbola (x^(2))/(a^(2))-(y^(2))/(b...

    Text Solution

    |

  15. For non - zero vectors vec(a) and vec(b) id |vec(a)+vec(b)|lt|vec(a)-v...

    Text Solution

    |

  16. General solution of y(dy)/(dx)+by^(2)=a cos x, 0 lt x lt 1 is Here ...

    Text Solution

    |

  17. The points of the ellipse 16x^(2)+9y^(2)=400 at which the ordinate dec...

    Text Solution

    |

  18. The letters of the word COCHIN are permuted and all permutations are a...

    Text Solution

    |

  19. If the matric A=((2,0,0),(0,2,0),(2,0,2)), then A^(n)=((a,0,0),(0,a,0)...

    Text Solution

    |

  20. The sum of n terms of the following series, 1^(3)+3^(3)+5^(3)+7^(3)+…....

    Text Solution

    |