Question

The angles of a triangle are in the ratio of 2:4:3. the smallest angel of the triangle is : *=degree
a) 20*
b)40*
c)60*
d)80*​

Answer 1

Answer:

b)40*

Step-by-step explanation:

let the angle be in the ratio of x.

then, angle a = 2x , angle b = 4x and angle c=3x

angle a + angle b + angle c= 180⁰

2x + 4x +3x =180⁰

9x = 180⁰

x=180⁰÷9

x=20⁰

angle a = 2x = 2×20⁰ = 40⁰

angle b = 4x = 4×20⁰ = 80⁰

angle c = 3x = 3×20⁰ = 60⁰