Solve for the unknown part. Round to one decimal place. 5² = (9)² + (10)² - 2(9)(10)cos(A) A) A $\approx$ 29.4° B) A $\approx$ 29.6° C) A $\approx$29.9° D) A $\approx$ 30.2°

Question

Quizplus · Accepted Answer

First, simplify the equation: 5² = 9² + 10² - 180cos(A) Combining like terms: -4² = -180cos(A) Dividing by -4: ² = 45cos(A) Using the Law of Cosines: cos(A) = (45^2 + 9^2 - 10^2)/(2*45*9) cos(A) = 0.5263 Taking the inverse cosine: A ≈ 29.9° Therefore, the answer is C.

Solve for the Unknown Part ≈\approx≈ 294° B) A Unknown ≈\approx≈ 296° C) A Unknown

Solve for the Unknown Part $\approx$ 294°
B) A Unknown $\approx$ 296°
C) A Unknown