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.
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3/5=0.6
4/5=0.8
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(a)
&#960; &#8722; t(rotate cc &#960;-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)
&#960; + t (rotate cc &#960;+t which places reference angle t in quadrant III where sin<0, cos<0)
(x, y) =(-0.6,-0.8)
(d)
2&#960; + t (rotate cc 2&#960;+t which places reference angle t in quadrant I where sin>0, cos>0)
(x, y) = (0.6,0.8)