If n is an integer, n ? 180° represents an integer multiple of 180°, and 
represents an odd integer multiple of 90°. Decide whether the expression is equal to 0, 1, -1, or is undefined. tan(n ? 180°)
A. 0
B. Undefined
C. 1
D. -1
Answer: A
Mathematics
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Multiply or divide as indicated. Write the answer in lowest terms.6 ? 
A. 15
B. 54
C. 58
D. 58
Mathematics
Find the integral.
A. 2 cos t - 
sin 4t + C
B. 2 cos t + 4 sin 4t + C
C. -2 cos t - 4 sin 4t + C
D. 2 cos t + 
sin 4t + C
Mathematics
Use trigonometric identities to find the exact value.
A. -2
B. - 
C. -
D. - 
Mathematics
Solve the problem.The graph below shows the position s = f(t) of a body moving back and forth on a coordinate line. (a) When is the body moving away from the origin? Toward the origin? At approximately what times is the (b) velocity equal to zero? (c) Acceleration equal to zero? (d) When is the acceleration positive? Negative?
What will be an ideal response?
Mathematics