Question

020A93°B14Find the side length of AC. Round your answer to the nearest whole number

Answer 1

Using law of cosines:

AC² = AB² + CB² - 2*AB*CB*cos(B)

AC² = 14² + 20² - 2*14*20*cos(93)

AC² = 196 + 400 - (-29.3081355)

AC² = 596 + 29.3081355

AC² = 625.3081355

Take the square root from both sides:

√(AC² )= √(625.3081355)

AC = 25.00616195 ≈ 25