Home
Class 12
MATHS
The value of sinpi/18+sinpi/9+sin(2pi)/9...

The value of `sinpi/18+sinpi/9+sin(2pi)/9+sin(5pi)/18` is

A

`sin (7pi)/18 + sin(4pi)/9`

B

1

C

`cos pi/6 + cos (3pi)/7`

D

`cos pi/9 + cos(3pi)/7`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGNOMETRIC FUNCTIONS

    AAKASH INSTITUTE|Exercise Assignment Section-B (Objective Type Questions (One option is correct))|1 Videos

  • TRIGNOMETRIC FUNCTIONS

    AAKASH INSTITUTE|Exercise Section-B (Objective Type Questions One option is correct)|131 Videos

  • TRIGNOMETRIC FUNCTIONS

    AAKASH INSTITUTE|Exercise Try Yourself|32 Videos

  • THREE DIMENSIONAL GEOMETRY

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION - J|10 Videos

  • VECTOR ALGEBRA

    AAKASH INSTITUTE|Exercise SECTION-J (Aakash Challengers Questions)|5 Videos

Similar Questions

Explore conceptually related problems

The value of 2 sin (pi/8) sin((2pi)/8) sin((3pi)/8) sin ((5pi)/8) sin ((6pi)/8) sin((7pi)/8) is :

The value of sin (pi/14). sin((3pi)/14). sin( (5pi)/14)………. Sin ((13pi)/14) is

The value of sin ""(pi)/(16) sin ""(3pi)/(16) sin ""(5pi)/(16) sin ""(7pi)/(16) is

The value of sin(pi)/(14)sin(3 pi)/(14)sin(5 pi)/(14)sin(7 pi)/(14)sin(9 pi)/(14)sin(11 pi)/(14)sin(13 pi)/(14) is equal to

The numerical value of sin pi/18 * sin 5pi/18* sin 7pi/18 is.............

The value of sin""(pi)/(14).sin""(3pi)/(14).sin""(5pi)/(14).sin""(7pi)/(14).sin""(9pi)/(14).sin""(11pi)/(14).sin""(13pi)/(14) is

The value of sin^(-1)((cos(pi/9))

AAKASH INSTITUTE-TRIGNOMETRIC FUNCTIONS -Assignment section-A (Objective Type Questions (One option is correct))
  1. Find the value of cos 12^(@)+cos 84^(@)+cos 156^(@)+cos 132^(@)

    Text Solution

    |

  2. The value of sin 50^(@) - sin70^(@) + sin 10^(@) is equal to

    Text Solution

    |

  3. The value of sinpi/18+sinpi/9+sin(2pi)/9+sin(5pi)/18 is

    Text Solution

    |

  4. The value of sin""(pi)/(10)sin""(13pi)/(10) is

    Text Solution

    |

  5. In a triangleABC, if sinA - cosB = cos C, then the measured of angleB ...

    Text Solution

    |

  6. The value of cos1^(@) cos 2^(@) ..............cos179^(@) is

    Text Solution

    |

  7. 2cos(pi/13)cos(9pi/13)+cos(3pi/13)+cos(5pi/13)=0

    Text Solution

    |

  8. If sintheta +costheta =1, then the value of sin2theta is equal to

    Text Solution

    |

  9. If tan A=1/2 and tan B=1/3, then tan(A +B) is equal to

    Text Solution

    |

  10. The minute hand of a watch is 3cm long. How far does its tip move in 2...

    Text Solution

    |

  11. If sintheta=(-4)/(5) and theta lies in third quadrant, then the value...

    Text Solution

    |

  12. The value of tan75^(@) =

    Text Solution

    |

  13. If 1,omega , omega^2 are the cube roots of unity , then Delta=|(1,ome...

    Text Solution

    |

  14. The value of 2sinA cos^(3)A -2sin^(3)A cosA is

    Text Solution

    |

  15. If tanalpha=(sqrt(3)+1)/(sqrt(3)-1), then the expression cos 2alpha +(...

    Text Solution

    |

  16. If sin^2 theta=1/4 , then the value of theta is

    Text Solution

    |

  17. The solution of the equation cos^2theta+sintheta+1=0 lies in the inter...

    Text Solution

    |

  18. The general solution of tan3x=1 is

    Text Solution

    |

  19. If sin theta =sqrt(3) cos theta, -pi lt theta lt 0, then the value of ...

    Text Solution

    |

  20. The total number of solutions of the equation tanx + secx = 2 which li...

    Text Solution

    |