Question

3. The measures of angles of a triangle are in the ratio 5:6:7. Find the measures.
a) 50°, 60° and 70°
b) 60°. 50° and 80°
c) 60°, 50° and 75°
d) 50°, 60° and 90°
Tno
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Answer 1

Answer:

Let x be the common multiple. As we know that sum of interior of triangle is 180 degree.

Hence,

5x + 6x + 7x = 180 degree

18x = 180 degree

x = 180/18

x = 10 degree

5x = 5(10) = 50 degree

6x = 6(10) = 60 degree

7x = 7(10) = 70 degree

Thus option A is correct.