4.8: Applications and Models

AKA: Word Problems

Ex. 1) Solve for x.

12

x

35°

Ex. 2) From a point 65 ft. from the base of a church, the angle of elevation to the base of the steeple is 35° and 43° to the top of the steeple. What is the height of the steeple?

Bearing Problemsknots: nautical miles per hour (used to find distance)Direction: N 22° W means point north, then turn 22° towards the west.

Ex. 3) A sailboat leaves the pier due west at 8 knots. After 15 minutes it changes course N 16° W at 10 knots. Find the bearing and distance from the pier after 12 minutes on this new course.

x

y°106°2 nm

2 nm

Assignment:

#20 p. 359 #15-19 (odd), 22, 25, 29-37 (odd)

Draw ALL Pictures!!