Find all values of ?, if ? is in the interval [0, 360°) and has the given function value.cos ? = 
A. 60° and 300°
B. 210° and 330°
C. 60° and 120°
D. 150° and 210°
Answer: A
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Find the direction angle of the vector v. Round to the nearest tenth if necessary. v = -i + 
j
A. 135° B. 300° C. 150° D. 120°
Find the first five partial sums of the given series and determine whether the series is convergent or divergent. If it is convergent, then find its sum.
+ 
+ 
+ 
+ 
+ ...
A. 0.3333, 0.4000, 0.4286, 0.4444, 0.4545; convergent; 0.75 B. 0.3333, 0.4000, 0.4286, 0.4444, 0.4545; convergent; 0.4545 C. 0.3333, 0.4000, 0.4286, 0.4444, 0.4545; divergent D. 0.3333, 0.4000, 0.4286, 0.4444, 0.4545; convergent; 0.5
Tell which set or sets the number belongs to: natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers.8.97
A. rational B. rational, real C. real D. natural, rational, real
Solve.Two airplanes take off from the same airport, one traveling east and the other traveling west. At a given point in time, one of the airplanes has flown 329 miles and the other has flown 531 miles. At that point in time, how far apart are they?
A. 860 miles B. 202 miles C. 1720 miles D. 850 miles