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If the angles of a triangle are in the ratio 4 : 1 : 1, then the ratio of the longest side to the perimeter is
  • a)
    √3 : (2 + 3)
  • b)
    1 : 6
  • c)
    1 : 2 + √3
  • d)
    2 : 3
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
If the angles of a triangle are in the ratio 4 : 1 : 1, then the ratio...
Let the angles of the triangle be 4x, x, and x degrees, where x is a positive number.

The sum of the angles in a triangle is 180 degrees, so we have 4x + x + x = 180.
Simplifying the equation, we have 6x = 180.
Dividing both sides by 6, we have x = 30.

Therefore, the angles of the triangle are 120 degrees, 30 degrees, and 30 degrees.

Let the longest side be a, and the other two sides be b and c.

Using the Law of Sines, we have a/sin(120) = b/sin(30) = c/sin(30).

Simplifying, we have a/sqrt(3) = b/0.5 = c/0.5.

Therefore, a = sqrt(3)b and a = sqrt(3)c.

Adding these equations, we have a + a = sqrt(3)b + sqrt(3)c.

Simplifying, we have 2a = sqrt(3)(b + c).

The perimeter of the triangle is a + b + c.

Substituting the values, we have 2a = sqrt(3)(2a).

Dividing both sides by 2a, we have 1 = sqrt(3).

Therefore, the ratio of the longest side to the perimeter is 1:sqrt(3).
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Community Answer
If the angles of a triangle are in the ratio 4 : 1 : 1, then the ratio...
The angles of a triangle are in the ratio of 4:1:1, then the ratio of largest side to perimeter is:

The angles of the triangle are 120 : 30 : 30,. since , 4x + ,x + x = 180 or, 6x=180 or ,. x = 30 so, 120, 30 and 30)
We Know
a/ SinA = b/ SinB = c/ SinC = K

a = K SinA = K Sin120 = √ 3/2

b = K SinB = K Sin30 = 1/2


c = K SinC = K Sin30 = 1/2

the ratio of largest side to perimeter is √ 3/2 / (√ 3/2 + 1)
= √ 3/ (√ 3 + 2) = √3: (√3+2)
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If the angles of a triangle are in the ratio 4 : 1 : 1, then the ratio of the longest side to the perimeter isa)√3 : (2 + 3)b)1 : 6c)1 : 2 + √3d)2 : 3Correct answer is option 'A'. Can you explain this answer?
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