Question

PLEASE HELP ! worth 18 points :)

Answer 1

Answer:

x = 6.6

Step-by-step explanation:

law of cosines:

x² = b² + c² - 2ac · cosX

x² = 5² + 8² - 2(5 · 8) · cos 55°

x² = 25 + 64 - 80· cos 55°

x² = 25 + 64 - 45.89

x² = 89 - 45.89

x² = 43.11

x = √43.11

x ≈ 6.6