13. The tallest church tower in the Netherlands is the Dom Tower in Utrecht. If the angle of elevation to the top of the tower is 77° when 25.9 m from the base, what is the height of the Dom Tower to the nearest metre. (A) a. 25 m b. 112 m с. 115 m d. 27 m

15. The radius of the earth is 6380 km. A ship on the Atlantic Ocean travels around the planet through an angle of radians. How far does the ship move along the surface of the acean (answer to the nearest km)?

2. Building X is 100ft tall. Building Y is 200ft away from building X, where the distance is measured from the bottoms of the two buildings. Building Y is shorter than building X. The angle of depression from the top of building X to the top of building Y is 10° (a) Draw a diagram to the right showing the two buildings. Label known lengths and angles. (b) Find the height of building Y. (c) Find the angle of depression from the top of building Y to the bottom of building X. 00303000 13. A plane took off from a runway along a 5° angle of elevation. After 120 miles along that angle, it reached cruising altitude, and leveled off. (a) How far east did the plane travel before reaching the cruising altitude? Sins - 120 10.4 = x (b) What was the cruising altitude? sins = 10.4 Cuis 120 = 108.8 14. A rectangle has sides of length 6 and 10. Find the measure of the smaller angle formed loro its two diagonals cross.

1. Convert 220° to radians. Express the angle to 2 decimal places. 2. Convert 75° to radians. Answer in terms of л.