Question

If the angles of a triangle are in the ratio of 1:2:7,Find the angles

Answer 1

Answer:

let the ratio be x ,2x and 7x

we know that the sum of all angles of a ∆ is 180°.

so,

x + 2x + 7x = 180°

=> 10x = 180

=> x = 180/10 = 18°

so, first angle is x = 18°

second angle is 2x = 2 × 18 = 36°

third angle = 7x = 7 × 18 = 136°