The Unit Circle
Sector Area and Arc Length
Central and Inscribed Angles
Interior and Exterior Angles
Equations of Circles
100
Using the unit circle, determine
sin(180)
0
100
Find the arc length of the bolded section. Round to the nearest hundredth.
20.25
100
Find arc RP.
136
100
Find angle RTP.
117
100
Identify the center and radius of the equation:
(x-5)^2+(y+4)^2=100
Center: (5, -4)
Radius: 10
200
Using the unit circle, determine
cos((7pi)/4)
(sqrt2)/2
200
Calculate the area of the bolded section of the circle. Round to the nearest hundredth.
50.61
200
Find angle N.
54
200
Find angle G.
83
200
Write the equation of a circle whose center point is (-2,0) and has a radius of 11.
(x+2)^2+y^2=121
300
In which quadrants is the sine function of an angle negative?
Quadrants 3 and 4
300
Find the area of the bolded section of the circle. Round to the nearest hundredth.
526.58
300
What is the measure of angle BEC?
103
300
Find arc QT.
107
300
What is the equation of the circle below?
(x+2)^2+(y-6)^2=25
400
Using the unit circle, determine
tan((3pi)/2)
Undefined
400
What is the crust length of a slice of apple pie that is nine-inches in diameter and been cut into six equal slices? Write your answer in terms of pi.
(3pi)/2
400
Find arc BEA.
212
400
Find arc MK.
48
400
What is the formula of the Unit Circle?
x^2+y^2=1
500
Using the unit circle, determine what
tan((7pi)/6)
(sqrt3)/3
500
Find the area of two-and-a-half slices of pizza from a 24-inch pizza that's been cut into twelve slices. Write your answer in terms of pi.
30pi
500
Solve for x.
21
500
Find angle DEC.
115
500
Identify the center and radius of the following equation:
x^2+y^2-10x+8y+32=0
Center: (5, -4)
Radius: 3