Question

In a triangle abc, if 2 a=3b=6c, find angle a

Answer 1

a, b , c are angles  as given.

2a = 6c     so   a = 3c
3b  = 6 c     so   b = 2 c

a+b+c  = 180 deg.  in a triangle.

so  6 c  = 180    =>  
 
c = 30 deg
a = 90 deg.     b =  60 deg