Given the triangle ABC, if side b is 33 ft., side c is 18 ft., and angle A is 52 °, find side a. Please round to one decimal.

Answer 1

Use the law of cosines:

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

you are given sides b and c and angle A, so you can plug in those numbers and solve for a.