As in this figure two sides of triangle are equal so angle A=B because angle opposite to equal sides are equal so
60+x+x= 180
60+2x=180
2x= 180-60
2x=120
x=120/2
x=60
Therefore B,C is 60
Well there is no chart and no choices but if its the same as mine it is hayden
I'm fairly certain the answer is 1/3.