Question 921132
For the given value of t determine the reference angle t ' and the exact values of sin t and cos t.
t = 4π/3
t '= radians
sin t =
cos t =
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reference angle t'=&#960;/3 in quadrant III in which sin<0, cos<0
sin t=sin(&#960;/3)=-&#8730;3/2
cos t=cos(&#960;/3)=-1/2