5 Questions
| Total Attempts: 156

The purpose of this test is to evaluate students' knowledge about trigonometric functions.

Questions and Answers

- 1.Street inclination problem Someone wants to know the inclination angle of a street. He notices that the bricks in a fence are horizontal with respect to the street and that the horizontal distance from a point is 35 cm. From there downward, the brick measures 6 cm of vertical distance towards the street. What is the inclination angle?
- A.
12° 13’12”

- B.
9°43´39.28”

- C.
80°16’20”

- D.
10°19´20"

- E.
None

- 2.Flag rope problem If you need to buy a rope for the flag pole and you notice that the shadow cast by the flagpole is 11.6m. While the elevation angle of the sun is 35° 40’. What is the length of the rope you must buy?
- A.
16.65m

- B.
32.32m

- C.
17.28m

- D.
34.23m

- E.
15.38m

- 3.Lighthouse problem An observer watches from the top of a 60m height lighthouse a boat on the water with a depression angle of 12°42’. What is the distance from the boat to the tower?
- A.
58.53m

- B.
13.19m

- C.
13.52m

- D.
57.27m

- E.
13.89m

- 4.Radiotherapy problem A gamma ray tube is used to treat a tumor located at 5.7 cm under the skin of the patient. In order not to damage an organ on top of the tumor, the technician moves the tube 8.3 cm. to one side. What would be the angle of the tube for the gamma rays to affect the tumor?
- A.
34°28’45”

- B.
55°31’14”

- C.
34°11’19”

- D.
51°35’24”

- E.
35°23’44”

- 5.Radiotherapy problem A gamma ray tube is used to treat a tumor located at 5.7 cm under the skin of the patient. In order not to damage an organ on top of the tumor, the technician moves the tube 8.3 cm. to one side.4 How long would the ray travel through the skin?
- A.
11.45cm

- B.
16.10cm

- C.
10.06cm

- D.
15.23cm

- E.
12.06cm