So a, b, and c are sides of a right triangle, where side a is across from angle A, side b is across angle B, side c across from the right angle,

Question

If c = 21 and A = 34 degrees, then find the missing sides and angles in this right triangle.

All angles should be in degrees, not radians, and all trig functions entered will be evaluated in degrees, not in radians.

(a) Side a= ___ number

(b) Side b= ___ number

(c) Angle B= ___ degrees

Answer 1

a = 21sin34 = about 11.74

b = 21cos34= about 17.41

B = 90-34 = 56 degrees