LESSON 4
PRACTICE EXERCISE
The following items will test your grasp of the material covered in this lesson. There is only one correct
answer to each item. When you complete the exercise, check your answer with the answer key that
follows. If you answer any item incorrectly, study again that part which contains the portion involved.
1.
Which of the following would be the result of subtracting 98 47' 52" from 36 40' 30"?
A.
62€ 07' 22"
B.
135€ 28' 43"
C.
197 35' 44"
D.
297 52' 38"
2.
If you divide an angle of 35 14' 15" into three equal segments, how many degrees, minutes, and
seconds would each segment have?
A.
11 18' 45"
B.
11€ 44' 45"
C.
11€ 52' 45"
D.
12 00' 45"
3.
If A and B are the acute angles of a right triangle, then cosine A is equal to _______.
A.
cos B
B.
sin B
C.
sec B
D.
sec A
4.
In which of the four quadrants of a circle would an angle containing 282€ 16' be located?
A.
IV
B.
II
C.
III
D.
I
5.
To solve a right triangle, two parts besides the right angle must be known. One of these parts
must be __________.
A.
An obtuse angle
B.
The hypotenuse
C.
An exterior angle
D.
A side
4-33
EN0591
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