The Three Angles of a Triangle are in the Ratio 3:4:5. Then the Angles are:

  1. 60o, 45o,75o
  2. 75o,60o,45o
  3. 45o, 60o, 75o
  4. 60o, 75o, 45o
Monis Rasool Professor Asked on 9th October 2015 in Maths.
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1 Answer(s)

Answer: (3) 45o, 60o, 75o.

Explanation:-
The ratio of three angles = 3: 4: 5
Let the three angles of a triangle are 3X, 4X and 5X

Then, 3X + 4X + 5X = 180
12 X = 180
X = 180/12
X = 15o

Then, the angles are 3X = 3 x 15 = 45o, 4 X = 4 x 15 = 60o, 5 x 15 = 75o

Hence, the answer is (3) 45o, 60o, 75o.

Anurag Mishra Professor Answered on 10th October 2015.
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