Calculate the values of x and y in the following table.
Pulley A
Pulley B
Diameter
rpm
Diameter
rpm
30 cm
150
45 cm
x
y in.
40
24 in.
20
A. x = 200, y = 24
B. x = 100, y = 12
C. x = 50, y = 6
D. x = 300, y = 18
E. x = 50, y = 18
Answer: B
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A. 
B. 
C. 
D. 
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A. (9y + 10)(81y2 - 90y + 100) B. (9y - 10)(81y2 + 90y + 100) C. (729y - 10)(y2 + 90y + 100) D. (9y - 10)(81y2 + 100)
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A. 145.08° B. 55.08° C. 110.17° D. 34.92°
Find the exact value of the indicated trigonometric function of ?.cos ? = 
, 
< ? < 2?Find cot ?.
A. - 
B. 
C. - 
D. - 