Find z1z2. Write the answer in polar form with the argument between 0° and 360°.z1 = 10(cos 30° + i sin 30°), z2 = 5(cos 10° + i sin 10°)
A. 50(cos 40° + i sin 40°)
B. 15(cos 40° + i sin 40°)
C. 15(cos 300° + i sin 300°)
D. 50(cos 300° + i sin 300°)
Answer: A
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Determine whether the sequence of vertices is i) a walk, ii) a path, iii) a circuit in the given graph.
A ? E ? B ? H ? F
A. None of these B. Walk and path C. Walk only D. Walk, path, and circuit
Graph the integrand and use geometry to evaluate the integral.
A. 75 B. 225 C. 450 D. 300
Find a polynomial of least degree with only real coefficients and having the given zeros.4 + 
, 4 - 
, and 3
A. f(x) = x3 + 11x2 + 38x - 42 B. f(x) = x3 - 11x2 + 38x - 42 C. f(x) = x3 - 13x2 + 38x + 44 D. f(x) = x3 - 13x2 + 38x + 42
Fill in the blank with one of the words listed below.
The horizontal number line in the rectangular coordinate system is called the 
.
A. x-axis B. y-intercept C. x-intercept D. y-axis