S httpswwwmathxlcomStudentPlayerHomeworkaspxhomeworkld434539

S https://www.mathxl.com/Student/PlayerHomework.aspx?homeworkld-4345399908tquestionld-1&flushed-false;&icld; 454 Trigonom Homework: Section 7.3 The Law of Cosines 6 Score: 0 of 1 pt 7.3.57 Tomat edstance from the house at A to the house at Basrveyor measuresteange Ace which found to be 70° and then waksoff the distance to each house, 60eet and 80 fee The houses arefeet apart (Do not round unti the final answer. Then round to the nearest hundredth as needed )

Solution

AB²=AC²+BC²-2 AC BC cos ACB

AB²=3600+6400-9600cos70

AB²=10000-9600Cos70

AB=81.95feet