Angles to Radians (& back!)
Convert 360 degrees into radians.
2π
Convert (2,π ) into rectangular coordinates.
(-2,0)
Find the radius of a circle with the equation
(x+30)2+(y+20)2=1600
40
sec
1/cos
(1,0)
0
Convert π/4 into degrees.
45
Find one other polar representation of (-3, 2π /3)
One of the following:
(-3,-4π /3), (3,-π /3), (3,5π /3)
Write the equation of an ellipse with a vertex at (0,4) and a minor axis of 4 units.
(x2/4)+(y2/16)=1
1-sin2
cos2
(-1,0)
π
Convert 150 degrees into radians.
5π/6
Convert (-3, 3π/2) into rectangular coordinates.
(0,-3)
How many units are the major and minor axes of an ellipse with the equation:
((x-2)2/25)+((y+4)2/9)=1
Horizontal major axis of 10 units, vertical minor axis of 6.
tan
sin/cos
sin(π)
0
Convert 4π/3 into degrees.
240
Convert (3,-√ 3) into polar coordinates.
(2√ 3, 11π/6) or (2√ 3, -π /6)
Write the equation of a hyperbola with foci at (-4,2) and (2,2) while a=2.
((x+1)2/4)-((y-2)2/5)=1
sec2-1
tan
tan(7π/4)
-1
Convert 11π/6 into degrees.
330
Write 3 other polar representations of (3, π /4).
(3,9π /4), (-3,5π /4), (-3, -3π /4)
Write the type of directrix and direction of opening of a parabola with the equation:
x=(-1/8)y2
Opens to the left with a vertical directrix.
cot2+1
csc2
cos(π/4)
√2/2