Question

if the angles of a right angled triangle ar in AP then the smallest angle is

Answer 1

let x,y,z be three angles now we know .. say z=90 now we need x,y ....
a,a+c,a+2c are in arithmetic progression
a+2c =90 and also 2a+c =90
solving two equations
c=30 so a=30
hence x=30
y=30+c=60
z=90