Home
Class 12
MATHS
sin 20^(@) sin 40^(@) sin 60^(@) sin 8...

sin `20^(@) ` sin `40^(@)` sin `60^(@)` sin `80^(@) =(3)/(16)`

A

`- 3//16`

B

`5//16`

C

`3//16`

D

`-5//16`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRY RATIOS AND IDENTITIES

    ML KHANNA|Exercise MISCELLANEOUS EXERCISE (TRUE AND FALSE)|6 Videos

  • TRIGONOMETRY RATIOS AND IDENTITIES

    ML KHANNA|Exercise MISCELLANEOUS EXERCISE (FILL IN THE BLANKS)|6 Videos

  • TRIGONOMETRY RATIOS AND IDENTITIES

    ML KHANNA|Exercise MISCELLANEOUS EXERCISE (COMPREHENSION)|4 Videos

  • TRIGONOMETRICAL EQUATIONS

    ML KHANNA|Exercise SELF ASSESSMENT TEST |27 Videos

Similar Questions

Explore conceptually related problems

Prove that: sin20^(@)sin40^(0)sin60^(@)sin80^(@)=(3)/(16)

Prove that sin 10^(@) " sin " 50^(@) " sin " 60^(@) " sin " 70^(@) = .(sqrt(3))/(16)

Prove that: sin20^(0)sin40^(0)sin60^(@)sin80^(@)=(3)/(16)

Find sin20^(@)sin40^(@)sin60^(@)sin80^(@) .

sin20^(0)sin40^(0)sin60^(0)sin80^(@)=(3)/(16)

sin20^(@)sin40^(@)sin60^(@)sin80^(@)

ML KHANNA-TRIGONOMETRY RATIOS AND IDENTITIES-MISCELLANEOUS EXERCISE (SELF ASSESSMENT TEST)
  1. If tan theta = 3 and theta lies in thrid quadrant, then the value of s...

    Text Solution

    |

  2. If sin alpha = 12//13 , ( 0 lt alpha lt pi //2) and cos beta = - ( 3)...

    Text Solution

    |

  3. If theta and phi are angles in the first quadrant such that tan theta ...

    Text Solution

    |

  4. The value of cos ( pi //5) cos ( 2pi //5) cos ( 4pi //5) cos ( 8pi //5...

    Text Solution

    |

  5. sin 20^(@) sin 40^(@) sin 60^(@) sin 80^(@) =(3)/(16)

    Text Solution

    |

  6. The value of sqrt3 cosec20^@-sec20^@ is equal to:

    Text Solution

    |

  7. Givent that pi/2,alphaltpi then the expression sqrt((1-sinalpha)/(1+si...

    Text Solution

    |

  8. If tan alpha =(b)/(a), a gt b gt 0 and " if " 0 lt alpha lt (pi)/(4), ...

    Text Solution

    |

  9. If cos(A-B)=3/5and tan A tanB=2, then

    Text Solution

    |

  10. If A +B = ( pi )/( 3) and cos A + cos B =1, then which of the followin...

    Text Solution

    |

  11. If Sigma n^2 = lambda Sigma n, then sin^(-1) "" ((9 lambda^2 - 4 n^2)/...

    Text Solution

    |

  12. If A = 580^(@) then

    Text Solution

    |

  13. If 2 cos ( A//2) = sqrt(( 1+ sin A )) - sqrt(( 1- sin A )) , then

    Text Solution

    |

  14. If cos(alpha+beta)=4/5, sin(alpha-beta)=5/13and alpha, beta between 0 ...

    Text Solution

    |

  15. If a Delta PQR " if" 3 sin P + 4 cos Q = 6 and 4 sin Q + 3 cos P =1 , ...

    Text Solution

    |

  16. If (sin^4x)/2+(cos^4x)/3=1/5t h e n tan^2x=2/3 (b) (sin^8x)/8+(cos^...

    Text Solution

    |

  17. Let theta , phi in [0,2pi ] be such that 2 cos theta ( 1- sin phi ) = ...

    Text Solution

    |

  18. The maximum value of the expression 1/(sin^2theta+3sinthetacostheta+5c...

    Text Solution

    |

  19. The expression (tanA)/(1-cotA)+(cotA)/(1-tanA) can be written as :

    Text Solution

    |

  20. ABCD is a trapezium such that AB and CD are parallel and BC bot CD. If...

    Text Solution

    |