Question

Triangle ABC ABC if find angles A=80degreeB =2xdegree C=3xdegree Find C.

Answer 1

$sum \: of \: all \: angles \: of \: a \: triangle \: is \: 180$
so, A+B+C = 180 ; 80+2x+3x=180. 80+5x=180. Dividing the eqn by 5, so, 16+x=36. so, x=20. C =3x = 3(20)=60