Where is the angle for −7π8 in a unit circle? I am having difficulty finding...
Where is the angle for in a unit circle?
I am having difficulty finding the angle for in a unit circle. I have found the coordinates for and have to use the symmetry to locate the coordinates for . Is the angle just below the (1,0) and symmetry to ?
Answer & Explanation
. So you must rotate your point clockwise through an angle . This will take you to a point directly opposite the point you started from.
is in the third quadrant. So, using as your reference angle, make both coordinates negative.
(It is also coterminal with , since they differ by .)