Home
Class 11
MATHS
In a triangle ABC, a = 4, b=3, angle A =...

In a triangle ABC, a = 4, b=3, `angle A = 60^@`, then c is the root of the equation :

A

`c^2-3c-7=0`

B

`c^2+3c+7=0 `

C

`c^2-3c+7=0`

D

`c^2+3c-7=0`.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • TRIGNOMETRY

    MODERN PUBLICATION|Exercise EXERCISE|730 Videos

  • STRAIGHT LINES

    MODERN PUBLICATION|Exercise EXERCISE|304 Videos

Similar Questions

Explore conceptually related problems

In a triangle ABC if angle A= 60^@ ,a=5,b= 4, then c is a root of the equation :

In Delta ABC , If a =4 , b=3 and COS(A-B) =3/4, then

Let ABC be a triangle such that angle A =45^(@) , angle B =75^(@), then a+c sqrt2 is equal to

In triangle ABC, medians AD and CE are drawn AD = 5, angle DAC = pi//8, and angle ACE = pi//4 , then the area of the triangle ABC is equal to

In a triangle ABC, if a = 18, b = 24 and c = 30. Is it a right angled triangle?

If in a triangle ABC, (s-a)(s-b)= s(s-c), then angle C is equal to

In a triangle ABC, angle A is greater than angle B. If the measures of angles A and B satisfy the equation 2tanx -k(1+tan^2x)=0 , where k E (0, 1), then the measure of the angle Cis

If in a Delta ABC, b =sqrt3, c=1 and B-C =90^(@), then angle A is

In triangle ABC, a=5, b=4 and cos(A+B)=(31)/(32) In this triangle, c=

MODERN PUBLICATION-TRIGNOMETRY-EXERCISE
  1. In a triangle ABC, tan frac (A)(2)=5/6, tan frac (C)(2)=2/5, then :

    Text Solution

    |

  2. The equation a sin x + b cos x = c, where |c| > sqrt (a^2 +b^2) has :

    Text Solution

    |

  3. In a triangle ABC, a = 4, b=3, angle A = 60^@, then c is the root of t...

    Text Solution

    |

  4. If in a triangle, a cos ^(2)""C/2+c cos ^(2)""A/2=(3b)/(2), then its s...

    Text Solution

    |

  5. The angles of a triangle are in the ratio 4: 1: 1, then the ratio of t...

    Text Solution

    |

  6. If u=sqrt(a^2 cos^2 theta + b^2sin^2theta)+sqrt(a^2 sin^2 theta + b^2 ...

    Text Solution

    |

  7. If alpha, beta be such that pi < alpha- beta < 3 pi. If sin alpha +sin...

    Text Solution

    |

  8. If theta and phi are acute angles, sin theta=1/2, cos phi= 1/3, then t...

    Text Solution

    |

  9. The sides of a triangle, sin alpha, cos alpha and sqrt(1+ sin alpha co...

    Text Solution

    |

  10. If the angle opf a triangle are in the ratio 1:2:3, then show that the...

    Text Solution

    |

  11. If in Delta ABC, the altitudes from the vertices A, B and C on opposit...

    Text Solution

    |

  12. if cos(alpha-beta)=1a n dcos(alpha+beta)=l/e , where alpha,betamu in [...

    Text Solution

    |

  13. The number of solutions of the pair of equations: 2 sin^2 theta- cos 2...

    Text Solution

    |

  14. If p and q are positive real numbers such that p^2+ q^2=1, then the m...

    Text Solution

    |

  15. If sin^-1(x/5) + cosec^-1(5/4)= pi/2, then a value of x is

    Text Solution

    |

  16. AB is a vertical pole with B at the ground level and A at the top. A m...

    Text Solution

    |

  17. For 0 lt theta lt pi/2 , the solution (s) of sum(m=1)^6cos e c(theta+(...

    Text Solution

    |

  18. If (sin^(4)x)/(2)+(cos^(4)x)/(3)=1/5, then

    Text Solution

    |

  19. Let A and B denote the statements A : cos alpha + cos beta + cos gam...

    Text Solution

    |

  20. For a regular polygon, let r and R be the radii of the inscribed and t...

    Text Solution

    |