Home
Class 12
MATHS
In a DeltaABC, a =1 and the perrimeter i...

In a `DeltaABC, a =1` and the perrimeter is six times the AM of the since of the angles.The measure of `angle A` is

A

`(pi)/(3)`

B

`(pi)/(2)`

C

`(pi)/(6)`

D

`(pi)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • SOLUTION OF TRIANGLE

    MOTION|Exercise EXERCISE - 2 (LEVEL II)|6 Videos
  • SOLUTION OF TRIANGLE

    MOTION|Exercise EXERCISE - 3|33 Videos
  • SOLUTION OF TRIANGLE

    MOTION|Exercise EXERCISE -1|36 Videos
  • SEQUENCE & SERIES

    MOTION|Exercise Exercise -4 Level -II Previous Year /JEE Advanced|22 Videos
  • STRAIGHT LINE

    MOTION|Exercise Exercise 4 Lelvel -II|7 Videos

Similar Questions

Explore conceptually related problems

The perimeter of a DeltaABC is 6 times the arithmetic mean of the sines of its angles. If the side a is 1, then the angle A is

Angles A and B are complementary and the measure of angle A is twice the measure of angle B. Find the measures of angles A and B

In DeltaABC,angleA=68^(@) .If I is the incentre of the triangle ,then the measure of angle BIC is :

In a parallelogram PORS, angle P is four times of angle Q, then the measure of angle R is

Two complementary angles are such that two xx the measure of one is equal to three xx the measure of the other.The measure of the smaller angle is 45^(0) (b) 30^(0) (c) 36^(0) (d) none of these

The measure of an angle is four times the measure of its complementary angle. Then, the measure of that angle is ............

The measure of an angle is five times its complement. The angle measures.

Two complementary angles are such that two times the measure of one is equal to three times the measure of the other .the measure of the larger angle is :

In a DeltaABC , if(c+a+b) (a+b-c) =ab, then the measure of angle C is

If the perimeter of a triangle is six xx the arithmetic mean of the sine angles and the side 'a' is unity,then A=

MOTION-SOLUTION OF TRIANGLE-EXERCISE - 2 (LEVEL I)
  1. If twice the square of the diameter of the circle is equal to half the...

    Text Solution

    |

  2. In a triangle ABC, if a=2,b=4,c=5 then cosB=

    Text Solution

    |

  3. In a DeltaABC, a =1 and the perrimeter is six times the AM of the sinc...

    Text Solution

    |

  4. In a triangle ABC ( a sin B + b sin A)/(sqrt(sin A sin B)) = 4, /C = (...

    Text Solution

    |

  5. In a triangle ABC is (a)/(1)= (b)/(sqrt(3)) = (c )/(2), then

    Text Solution

    |

  6. In a DeltaABC, If A=30^@,b=2,c=sqrt3+1, then (C-B)/2 is

    Text Solution

    |

  7. cot (A+B)/2.tan(A-B)/2= (a) (a+b)/(a-b) (b) (a-b)/(a+b)

    Text Solution

    |

  8. In any triangle ABC,1-tan(A/2)tan(B/2)=

    Text Solution

    |

  9. In a triangleABC, if 3tan (A/2) tan (C /2)=1, then sides a,b,c are in

    Text Solution

    |

  10. If, in Delta ABC, a = 16, b = 24, c = 20, then : sin (A/2)= ....

    Text Solution

    |

  11. In triangleABC, (b+a-c)tan((A)/(2))=

    Text Solution

    |

  12. If, in Delta ABC, a = 2x, b = 2y and C = 120^(@) then the area of the ...

    Text Solution

    |

  13. If the median AD of triangle ABC divides the angle BAC in the ratio 1:...

    Text Solution

    |

  14. In a triangle ABC , let angleC=(pi)/2. If r is the in-radius and R is ...

    Text Solution

    |

  15. In an isosceles triangle with base angle alpha and lateral side 4, Rr=

    Text Solution

    |

  16. If I is the incentre of a triangle whose is radius and circumradius ar...

    Text Solution

    |

  17. AD, BE and CF are the medians of triangle ABC whose centroid is G. If ...

    Text Solution

    |

  18. Let 'l' is the length of median from the vertex A to the side BC of a ...

    Text Solution

    |

  19. If in a /\ ABC the altitude from the vertices A,B,C on opposite side a...

    Text Solution

    |

  20. If the radius of the circum-circle of an isosceles triangle PQR is equ...

    Text Solution

    |