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Alg2: Unit Circle Exact Values
供稿人: DiLaura
Tell which quadrant of the unit circle the following 
angle measures would appear in. 
Quadrant I
Quadrant II
Quadrant III
Quadrant IV
A.    -600º
Find the exact value for each of the following:
A.   cos 210º
½
-√3 / 2
√3/2
Tell which quadrant of the unit circle the following 
angle measures would appear in. 
Quadrant I
Quadrant II
Quadrant III
Quadrant IV
B.   7π/3
Tell which quadrant of the unit circle the following 
angle measures would appear in. 
Quadrant I
Quadrant II
Quadrant III
Quadrant IV
C.  545º
Find the exact value for each of the following:
B. csc -210º 
½
2
√2
2√3/3
Find the exact value for each of the following:
C. tan -5π/4
-1
1
√2/2
√2
round your answer to the nearest hundredth. 
Given that the cos θ = .62, use the Pythagorean theorem to find the value of sin θ. 
sin θ = 
round your answer to the nearest hundredth. 
Given that the cos θ = .5, use the Pythagorean theorem to find the value of sin θ. 
sin θ = 
Use the patterns of the unit circle to find the equivalent to the following:(check ALL that apply)


      sin 38º
 sin -38º
-sin 38º
 cos 52º
 cos -38º
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