Question

Find the value of x to the nearest tenth.

Answer 1

x = 9.4

Explanation:

(see attached for reference on cosine rule)

by cosine rule

x² = 8² + 15² - 2(8)(15) cos 33°

x² = 64 + 225 - 201.281

x² = 87.719

x = √87.719

x = 9.366

x = 9.4 (nearest tenth)