This is the concept of geometry, we are required to calculate for the length of the shortest side. The shortest side is the side opposite to the smallest angle; Therefore using sine rule we shall have: a/sin A=b/sinB=c/sinC let a=20 and A=100 b=x and B=20 thus the shortest side will be given by: 20/sin 100=x/sin 20 x=(20sin 20)/100 x=6.95 feet The answer is 6.95 feet
