Question

Find the length of a using the law of cosines. Round your answer to the two decimal places.

Angle A 43degrees
Side B=14
Side C=22

Answer 1

15.15 units

Explanation:

Law of cosines c^2 = a^2 + b^2 - 2abcosΦ

'c' is 'a' in this question application

'a' is 22 and b is 14 and Φ is 43 degrees

c^2 = 22^2 + 14^2 - 2 (22)(14)(cos (43)

c^2 = 229.486

c = 15.15 units