Chapter 2

Question 1

A smokestack 60 m high is stayed by guy wires of 58 m length, which make an angle of 45 degrees with the horizontal. What is the distance from the point of attachment to the top of the stack?
Select one:

A.
15.57 m

B.
18.98 m

C.
26.77 m

D.
36.77 m

E.
41.02 m.

Answer 1

B.
18.98 m

Question 2

Referring to the triangle ABC below, the ratio of opposite side/adjacent side (b/a) for angle B is called the:

02_01

Select one:

A.
Sine of angle B or Sin B

B.
Cosine of angle B or Cos B

C.
Secant of angle B or Sec B

D.
Tangent of angle B or Tan B

E.
Cotangent of angle B or Cot B.

Answer 2

D.
Tangent of angle B or Tan B

Question 3

In the following triangle, what is the value of sin B and what is the size of the angle B?

02_06

Select one:

A.
0.75, 48.59 degrees

B.
0.80, 53.13 degrees

C.
1.33, 48.6 degrees

D.
0.6, 36,87 degrees

E.
1.67, 53.32 degrees

Answer 3

D.
0.6, 36,87 degrees

Question 4

A coal conveyor belt, 60 m long, rises at an angle of 18 degrees to the horizontal and then discharges into a bunker. How high above the starting point is the discharge?
Select one:

A.
12.34 m

B.
15.84 m

C.
18.54 m

D.
19.49 m

E.
57.06 m.

Answer 4

C.
18.54 m

Question 5

In the given triangle, calculate the ratio of BC to AC, when angle ADC = 40 degrees, angle BDC = 20 degrees, angle ACD = 90 degrees, and side DC = 8m.

02_29

Select one:

A.
0.351

B.
0.362

C.
0.434

D.
0.474

E.
0.5.

Answer 5

C.
0.434

Question 6

In the following triangle, what is the value of tan A ?

02_06

Select one:

A.
1.33

B.
0.80

C.
0.75

D.
0.6

E.
1.67

Answer 6

A.
1.33

Question 7

Referring to the triangle ABC below, the ratio of: adjacent side / hypotenuse side, for angle A, is called the:

02_01

Select one:

A.
Sine of angle A or Sin A

B.
Cosine of angle A or Cos A

C.
Secant of angle A or Sec A

D.
Tangent of angle A or Tan A

E.
Cotangent of angle A or Cot A.

Answer 7

B.
Cosine of angle A or Cos A

Question 8

Referring to angle A in the figure below, side “a” is called the:

02_01

Select one:

A.
Hypotenuse

B.
Adjacent

C.
Opposite

D.
Reciprocal

E.
Median.

Answer 8

C.
Opposite

Question 9

Which of the following is an acute angle?
Select one:

A.
270 degrees

B.
350 degrees

C.
109 degrees 13 minutes 45 seconds

D.
186 degrees 30 minutes 59 seconds

E.
45 degrees.

Answer 9

E.
45 degrees.

Question 10

Reflex angles are greater than:
Select one:

A.
45 degrees

B.
90 degrees

C.
120 degrees

D.
180 degrees

E.
270 degrees.

Answer 10

D.
180 degrees