Question 918000: Suppose that the terminal point determined by t is the point (3/5, 4/5) on the unit circle. Find the terminal point determined by each of the following.
(a)
π − t
(x, y) =
(b)
-t
(x, y) =
(c)
π + t
(x, y) =
(d)
2π + t
(x, y) =
please explain how these are solved. Thanks!
Answer by lwsshak3(11628)   (Show Source):
You can put this solution on YOUR website! Suppose that the terminal point determined by t is the point (3/5, 4/5) on the unit circle. Find the terminal point determined by each of the following.
***
3/5=0.6
4/5=0.8
..
(a)
π − t(rotate cc π-t which places reference angle t in quadrant II where sin>0, cos<0)
(x, y) =(-0.6,0.8)
(b)
-t(in quadrant IV where cos>0, sin<0)
(x, y) =(0.6,-0.8)
(c)
π + t (rotate cc π+t which places reference angle t in quadrant III where sin<0, cos<0)
(x, y) =(-0.6,-0.8)
(d)
2π + t (rotate cc 2π+t which places reference angle t in quadrant I where sin>0, cos>0)
(x, y) = (0.6,0.8)
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