Home
Class 11
MATHS
Prove that (1)/(2sin10^(@))-2sin70^(@)=1...

Prove that `(1)/(2sin10^(@))-2sin70^(@)=1`.

A

a)0

B

b)1

C

c)2

D

d)4

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Jodhpur Park Boys School, Question Paper

    UNITED BOOK HOUSE|Exercise Exercise |29 Videos

  • KALIDHAN INSTITUTION

    UNITED BOOK HOUSE|Exercise EXERCISE|49 Videos

Similar Questions

Explore conceptually related problems

Find the value: 1/(2sin 10^(@))-2 sin 70^(@)

Prove that sin 10^(@) + sin 50^(@)-sin70^(@)=0

Find the value of (1/(2sin10^@)-2sin70^@)

Prove that sin10^(@) + sin20^(@) + sin 40^(@) + sin 50^(@) = sin 70^(@) + sin 80^(@)

Prove that sin^2(A/2)+sin^2(B/2)-sin^2(C/2)=1-2cos(A/2)cos(B/2)sin(C/2)

Prove that sin10^@sin50^@sin60^@sin70^@=sqrt3/(16)

Prove that sin 16^(@) + cos 16^(@) = 1/sqrt2(sqrt3 cos1^(@)+sin1^(@))

Prove that sin10^@+sin20^@+sin30^@+.........+sin360^@=0

Prove that: sin10^0sin30^0sin50^0sin70^0=1/(16)dot

A+B+C=pi ,prove that sin^2(A/2)+sin^2(B/2)+sin^2(C/2)=1-2sin(A/2)sin(B/2)sin(C/2)

UNITED BOOK HOUSE-JODHPUR PARK BOYS'S SCHOOL-EXERCISE
  1. If A={x in C:x^2=1}and B={x in C:x^4=1},then AcupBis :

    Text Solution

    |

  2. Prove that (1)/(2sin10^(@))-2sin70^(@)=1.

    Text Solution

    |

  3. IF cosA+cosB=m and sinA+sinB=n,where m,n!=0then sin(A+B)is equal to

    Text Solution

    |

  4. If 1,log9(3^(1-x)+2)and log3(4.3^x-1)are in A.P.,then x is equal to

    Text Solution

    |

  5. (666...n times)^2+(888..n times) is equal to

    Text Solution

    |

  6. If omegais an imaginary cube root of unit,then the value of the expres...

    Text Solution

    |

  7. Solution of |2x-3|<|x+2|is

    Text Solution

    |

  8. If the foot of perpendicular from the origin to a straight line is at ...

    Text Solution

    |

  9. The area boundede by the curves y=|x|-1and y=-|x|+1 is

    Text Solution

    |

  10. A ray of light along x+sqrt3y=sqrt3 gets reflected when reaching x-axi...

    Text Solution

    |

  11. Let A, B, and C be the sets such that A ∪ B = A ∪ C and A ∩ B = A ∩ C....

    Text Solution

    |

  12. Find the domain and range of the relation p defined by p={(a,b):b=|a...

    Text Solution

    |

  13. If x be real show that costhetacannot be equal to x+1/x.

    Text Solution

    |

  14. If costheta=tan^2((theta)/2)show that costheta=sqrt2-1

    Text Solution

    |

  15. If tan15^@=x.then show that x^2+2sqrt3x-1=0

    Text Solution

    |

  16. If omegabe an imaginaryb cube root of unity,then prove that,1/(1+2omeg...

    Text Solution

    |

  17. Show that the middle term in the expansion of (x-1/x)^(2n)is (1.3.5.7....

    Text Solution

    |

  18. Find the sum of all factors of the number 3645.

    Text Solution

    |

  19. For any two positive numbers a and b,prove that AMgeGM

    Text Solution

    |

  20. Find the vaue of 9^(1/3)9^(1/9)9^(1/27)...oo

    Text Solution

    |