since <A=10 and <B=10 then <C = 180 -10-10, <C=160
use the law of sines to find the missing sides: sinA/a = sinB/b = sinC/c
so sin160/10 = sin10/a which means 10sin10 = asin160
means 1.73648=asin160
divide both sides by sin160 and a=5.08
since angle A and B are equal then it is an isosceles triangle which then means sides a and be are equal.
Final answer <C=160 side a=b=5.08