Question

please solve the question
the second angle of a triangle is twise its first angle. the 3rd angle is 9 times the first angle. Find the angles of the triangle​

Answer 1

Step-by-step explanation:

Let the 1st angle= x,

2nd angle =2x and

third angle = 9x

=>x+2x+9x= 180

=> 12x = 180

=> x= 180/12 = 15

=> x= 15

angle 1 = 15°

angle 2 = 15×2=30°

angle 3 = 15×9= 135°