Use periodic properties of the trigonometric functions to find the exact value of the expression.tan 
A. 
B. -1
C. 
D. 1
Answer: D
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Find the length of the parametric curve defined over the given interval.x = 3 sin3 t, y = 3 cos3 t, 0 ? t ? ?
A. 6 B. 18 C. 3 D. 9
Evaluate the expression for the given values.
(a) m = 5, n = 5(b) m = 5, n = 20(c) m = 6, n = 3
A. (a) 0
(b) undefined
(c) 
B. (a) 0
(b) undefined
(c) 
C. (a) undefined
(b) 0
(c) 
D. (a) undefined
(b) 0
(c) 
Explain how to obtain the graph of the given quadratic function from the graph of 
f(x) = -2(x + 9)2 + 6
A. Take the graph of y = x2 and shift it 9 units to the right, shift it 6 units up, vertically stretch it by a factor of +2, and the graph will open downward. B. Take the graph of y = x2 and shift it 9 units to the left, shift it 6 units up, vertically compress it by a factor of +2, and the graph will open downward. C. Take the graph of y = x2 and shift it 9 units to the right, shift it 5 units down, vertically stretch it by a factor of +2, and the graph will open upward. D. Take the graph of y = x2 and shift it 9 units to the left, shift it 6 units up, vertically stretch it by a factor of +2, and the graph will open downward.
Solve the number problem by finding the value of the unknown number.When twice a number is subtracted from 25, the result is 15.
A. 8 B. 12 C. 4 D. 5