Name: 
 

Trigonometry Lesson 1 - Practice Problems



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

Let a = 25 degrees and b = 155 degrees. Which is a + b, in radians?
a.
trig_l1_problems_files/i0020000.jpg
c.
trig_l1_problems_files/i0020001.jpg
b.
trig_l1_problems_files/i0020002.jpg
d.
trig_l1_problems_files/i0020003.jpg
 

 2. 

What is the area of the triangle below? Use sin 40 = 0.64.

trig_l1_problems_files/i0030000.jpg

a.
202.61
c.
204.16
b.
200.11
d.
224.61
 

 3. 

What is the area of ABC?

trig_l1_problems_files/i0040000.jpg


a.
171.45
c.
223.92
b.
225.93
d.
117.96
 

 4. 

Which of the following is equivalent to 45 degrees?
a.
trig_l1_problems_files/i0050000.jpg
c.
trig_l1_problems_files/i0050001.jpg
b.
trig_l1_problems_files/i0050002.jpg
d.
trig_l1_problems_files/i0050003.jpg
 

 5. 

Which of the following is equivalent totrig_l1_problems_files/i0060000.jpg?
a.
80 degrees
c.
100 degrees
b.
60 degrees
d.
90 degrees
 

 6. 

The legs of a right triangle measure 120 ft and 220 ft. What is the area of the triangle?

a.
132,000 ft2
c.
122,000 ft2
b.
26,400 ft2
d.
24,600 ft2
 



 
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