Practice - Section 4.1

Honors Precalculus
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Practice - Section 4.1 - Degrees and Radians
State the quadrant in which the terminal side of each angle lies.
1) −
3)
7π
4
2)
2π
3
13π
12
4) −
11π
6
Find the measure of each angle.
5)
6)
y
y
5π
6
3π
4
x
7)
x
8)
y
x
y
x
5π
18
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Draw an angle with the given measure in standard position.
9) −
11π
6
10) −
19π
6
y
y
x
11) −
5π
4
x
12)
34π
9
y
y
x
x
Convert each degree measure into radians and each radian measure into degrees.
5π
3
14) -315°
15) 300°
16) -670°
13) −
Convert each decimal degree measure into degrees-minutes-seconds and each
degrees-minutes-seconds into decimal degrees.
17) 84.88°
18) 291° 57' 18"
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19) 29.3875°
20) 194° 57' 9"
Find a positive and a negative coterminal angle for each given angle.
21) −
23)
23π
6
31π
18
22)
π
6
24)
3π
4
Find the length of each arc. Round your answers to the nearest tenth.
25)
26)
π
2
10 km
15 in
5π
6
Find the area of each sector. Round your answers to the nearest tenth.
27)
28)
3π
4
11 ft
11 ft
5π
6
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Answers to Practice - Section 4.1 - Degrees and Radians
1) I
π
5)
4
9)
2) III
17π
6)
6
10)
y
x
13) -300°
17) 84° 52' 48"
π
11π
21)
and −
6
6
25) 26.2 km
3) II
7) −
11)
y
x
7π
4
18) 291.955°
13π
11π
22)
and −
6
6
26) 23.6 in
14) −
4) I
8) −3π
41π
18
12)
y
x
5π
3
19) 29° 23' 15"
67π
5π
23)
and −
18
18
27) 158.4 ft²
15)
y
x
67π
18
20) 194.9525°
11π
5π
24)
and −
4
4
28) 142.5 ft²
16) −
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