**1. The angle of elevation of a ladder leaning against a wall is 60º and the foot of the ladder is 5m away from the wall. What is the length of the Ladder?**

A. 10

B. 11

C. 10.2

D. 10.5

Ans. A

**2. Two boats are sailing in the sea on the two sides of a pillar in between the sea. The angle of elevation of the top of the pillar is observed from the boats are 30º and 45º respectively. If the pillar is 100 m high, the distance between the two boats is:**

A. 273

B. 173

C. 174

D. 373

Ans. A

**3. An observer 1.6 m tall is 20m away from a tower. The angle of elevation from his eye to the top of the tower is 60º. The heights of the tower is:**

A. 36.25

B. 36.24

C. 36.34

D. 26.34

Ans. B

**4. There are two points X and Y , the angle of elevation from the top of a tower to the two points are 30º and 60º respectively. Find the distance between point X and the tower?**

A. 17.1

B. 18.1

C. Incomplete data.

D. None of the above.

Ans. C

**5. From a point P on a level ground, the angle of elevation of the top tower is 30º. If the tower is 100 m high, the distance of point P from the foot of the tower is:**

A. 173

B. 183

C. Incomplete data.

D. None of the above.

Ans. A