Home
Class 11
MATHS
In a Delta A B C ,if a=2,/B=60^0a n d/C=...

In a `Delta A B C ,if a=2,/_B=60^0a n d/_C=75^0` , then `b=` (a)`sqrt(3)` (b) `sqrt(6)` (c) `sqrt(9)` (d) `1+sqrt(2)`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • SETS

    RD SHARMA ENGLISH|Exercise All Questions|228 Videos
  • SOME SPECIAL SERIES

    RD SHARMA ENGLISH|Exercise All Questions|69 Videos

Similar Questions

Explore conceptually related problems

In a DeltaA B C ,\ if\ b=sqrt(3),\ c=1\ a n d\ /_A=30^0 , then find a

In a DeltaABC if a = 2, b=sqrt(6),c=sqrt(3)+1 , then cos A=

2. "(sqrt(8))^((1)/(3))="? (a) "2," (b) "4" (c) "sqrt(2)," (d) "2sqrt(2)"

A circle passes through the points A(1,0) and B(5,0), and touches the y-axis at C(0,h)dot . If /_A C B is maximum, then (a) h=3sqrt(5) (b) h=2sqrt(5) (c) h=sqrt(5) (d) h=2sqrt(10)

In a A B C , prove the following : In a DeltaA B C ,\ if\ a=5, \ b=6\ a n d\ C=60^0, show that its area is (15sqrt(3))/2 sq.units dot

Let A B C be a triangle such that /_A C B=pi/6 and let a , b and c denote the lengths of the side opposite to A , B ,and C respectively. The value(s) of x for which a=x^2+x+1,b=x^2-1,\and\ c=2x+1 is(are) -(2+sqrt(3)) (b) 1+sqrt(3) (c) 2+sqrt(3) (d) 4sqrt(3)

The rationalisation factor of sqrt(3) is (a) -sqrt(3) (b) 1/(sqrt(3)) (c) 2sqrt(3) (d) -2sqrt(3)

The value of sqrt(3-2\ sqrt(2)) is (a) sqrt(2)-1 (b) sqrt(2)+1 (c) sqrt(3)-sqrt(2) (d) sqrt(3)+\ sqrt(2)

In the given figure A B is the diameter of the circle, centred at Odot If /_C O A=60^0,A B=2r ,A C=d , and C D=l , then l is equal to (a) dsqrt(3) (b) d//sqrt(3) (c) 3d (d) sqrt(3) d /2

1/(sqrt(9)-\ sqrt(8)) is equal to: (a) 3+2sqrt(2) (b) 1/(3+2sqrt(2)) (c) 3-2sqrt(2) (d) 3/2-\ sqrt(2)

RD SHARMA ENGLISH-SINE AND COSINE FORMULAE AND THEIR APPLICATIONS-All Questions
  1. In any A B C , prove that: (b+c)cos A+(c+a)cos B+(a+b)cos C=a+b+c

    Text Solution

    |

  2. For any triangle ABC, prove that a(bcosC-c cosB)=b^2-c^2

    Text Solution

    |

  3. In a Delta A B C ,if a=2,/B=60^0a n d/C=75^0 , then b= (a)sqrt(3) ...

    Text Solution

    |

  4. If a^2,b^2,c^2 are in A.P., prove that cotA ,cotB ,cotC are in AdotPdo...

    Text Solution

    |

  5. In any triangle A B C , prove that: (1+cos(A-B)cos C)/(1+cos(A-C)cos B...

    Text Solution

    |

  6. In any triangle. if(a^2-b^2)/(a^2+b^2)=("sin"(A-B))/("sin"(A+B)) , the...

    Text Solution

    |

  7. For any triangle ABC, prove that acosA+bcosB+ccosC=2asinBsinC

    Text Solution

    |

  8. In any triangle A B C , prove that: (b-c)cot (A/2)+(c-a)cot (B/2)+(a-b...

    Text Solution

    |

  9. If in a A B C ,(sinA)/(sinC)=(sin(A-B))/(sin(B-C) , prove that a^2,b^...

    Text Solution

    |

  10. In a triangle A B C , if acosA=bcosB , show that the triangle is eithe...

    Text Solution

    |

  11. If in triangle the angles are in the ratio as 1:2:3 , prove that the ...

    Text Solution

    |

  12. In the sides of a triangle are in the ratio 1:sqrt(3):2, then the meas...

    Text Solution

    |

  13. In any triangle A B C , prove that: (a^2sin(B-C))/(sinB+ sin C)+(b^2...

    Text Solution

    |

  14. The angles of a triangle A B C are in AdotPdot and it is being given t...

    Text Solution

    |

  15. In A B C , prove that (a-b^2cos^2C/2+(a+b)^2sin^2C/2=c^2dot

    Text Solution

    |

  16. In a A B C , if a=3,b=5a n dc=7,fin dcos A ,cos Ba n dcos Cdot

    Text Solution

    |

  17. A particle just clears a wall of height b at distance a and strikes...

    Text Solution

    |

  18. A person observes the angle of elevation of the peak of a hill from a ...

    Text Solution

    |

  19. If in a triangleA B C , (2cosA)/a+(cos B)/b+(2cosC)/c=a/(b c)+b/(c a) ...

    Text Solution

    |

  20. In a triangle A B C , if cos A=(sinB)/(2sinC) , show that the triangle...

    Text Solution

    |