Question

Use a calculator to approximate the measures of ∠A, ∠B, and ∠C to the nearest tenth of a degree. sin A = 0.96, tan B = 0.53, cos C = 0.44

Answer 1

To find each of the angles we must make the following clearances:
For ∠A
sin A = 0.96
A = Asin (0.96)
A = 73.7 degrees
For ∠B
tan B = 0.53
B = Atan (0.53)
B = 27.9 degrees
For ∠C
cos C = 0.44
C = Acos (0.44)
C = 63.9 degrees
Answer:
approximate measures of ∠A, ∠B, and ∠C are:
A = 73.7 degrees
B = 27.9 degrees
C = 63.9 degrees