Question

Find c. Round to nearest tenth. c= ? ft. 59.6 is NOT the answer.

Answer 1

Answer: 15.5

==================================

Work Shown:

c^2 = a^2 + b^2 - 2*a*b*cos(C)

c^2 = 15^2 + 20^2 - 2*15*20*cos(50)

c^2 = 225 + 400 - 600*cos(50)

c^2 = 225 + 400 - 600*0.642787609686539

c^2 = 225 + 400 - 385.672565811924

c^2 = 239.327434188076

c = sqrt(239.327434188076)

c = 15.470211187572

c = 15.5