Find the indicated series by the given operation.Find the first three nonzero terms of the expansion for 
by dividing 1 by the series for cos x.
A. -x + 
x3 - 
x5 + . . .
B. x + 
x3 - 
x5 + . . .
C. 1 + 
x2 + 
x4 + . . .
D. 1 + 
x2 - 
x4 + . . .
Answer: C
Mathematics
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?
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A. 90 B. 70 C. 82 D. 80
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Find all values of ?, if ? is in the interval [0, 360°) and has the given function value.cos ? = - 
A. 60° and 120° B. 210° and 330° C. 150° and 210° D. 60° and 300°
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Evaluate the expression using the order of operations.-
A. 5 B. -5 C. -25 D. 29
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