Give the center and radius of the circle described by the equation and graph the equation.(x + 2)2 + (y - 3)2 = 9
A. center (- 2, - 3), r = 3
B. center (2, 3), r = 3
C. center (- 2, 3), r = 3
D. center (2, - 3), r = 3
Answer: C
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Answer the following statement true (T) or false (F)
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Find the exact value of the indicated trigonometric function of ?, if ? is an angle in standard position whose terminal side contains the given point.(21, 28); find cos ?.
A. 
B. 
C. 
D. 
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