The angles in a triangle are in the ratio 1:3:5. The measure of the largest angle is -
20∘
40∘
60∘
100∘
Let the angles be x∘, 3x∘ and 5x∘
x+3x+5x=180∘
9x=180∘
x=180∘9=20∘
Largest angle =5x=5×20∘=100∘
What is the measure of the largest angle of a triangle whose angles are in the ratio 4 : 5 : 9?
If the angles of a triangle are in the ratio 1 : 2 : 3, then the measure of the largest angle is ___.
The angles of a triangle are in the ratio 1:2:3. The measure of the largest angle is(a) 30∘(b) 60∘(c) 90∘(d) 120∘