For this case we can use the law of cosine, which is given by: c ^ 2 = a ^ 2 + b ^ 2 - 2 * a * b * cos (theta) Substituting values we have: c ^ 2 = (1.2) ^ 2 + (1.3) ^ 2 - 2 * (1.2) * (1.3) * cos (40) Clearing c we have: c = root ((1.2) ^ 2 + (1.3) ^ 2 - 2 * (1.2) * (1.3) * cos (40)) c = 0.86 miles Answer: The distance between the park and Joey's house is: c = 0.86 miles
