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

- 60
^{o}, 45^{o},75^{o} - 75
^{o},60^{o},45^{o} - 45
^{o}, 60^{o}, 75^{o} - 60
^{o}, 75^{o}, 45^{o}

**Answer: (3) 45 ^{o}, 60^{o}, 75^{o}.**

**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 = 15^{o}

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

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