Question

(21) In a triangle ABC LA: 2B: L=3:4:5 then find measures of all angles​

Answer 1

ANSWER

45, 60, 75

Explanation:

in a triangle the measure all angles =180⁰

given , angle A:angleb :angle c =3:4:5

= 3x:4x:5x

3x+4x+5x =180

12x =180

x = 180/12

= 15

therefore , 3x = 3× 15=45

4x = 4×15=60

5x =5×15=75