Answer:
Just use the law of Sine
To find A degree's & side a as
A degrees equals 180 - 90 - 55 = 35
Sin(35°) / a = Sin(55°) / 16
16 * [sin(35°)] = a * [sin(55°)]
50 hundreds is 5,000 because
50 x 100 = 5,000
So do (21/2+49/4)-3/2=You get 21 1/4 miles
Since 21 1/4 is close to 21 1/2, this answer is reasonable. So A is the answer
