Question

two angles of a triangle are in the ratio 4:5 if the sum of these angles of third angle find all the angle of triangle

Answer 1

Step-by-step explanation:

Let the 3 angles be x°,4x° and 5x°

By condition,

x°+4x°+5x°=180°

x+4x+5x=180

10x=180

x=180/10

x=18

So the 3 angles are

=18°,(18×4)°,(18×5)°

=18°,72°,90°