Give an expression that generates all angles coterminal with the given angle. Let n represent any integer.-21°

A. -21° - n ? 180°
B. -21° + n ? 360°
C. -21° + n ? 180°
D. -21° + 2n ? 360°


Answer: B

Mathematics

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A. 63 + 45
B.  + 45
C. 72 + 45
D. 63 + 15

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Solve the problem.The voltage E in an electrical circuit is given by E = 5.8 cos 30?t, where t is time measured in seconds. Find the frequency of the function (that is, find the number of cycles or periods completed in one second).

A. 15
B.
C. 30
D.

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Find the numerical value of the expression for  and x - 2

A. a) 2  b) 16 B. a) 16  b) 2 C. a) 6  b) 20 D. a) 8  b) 36

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Simplify the expression. Write the result using positive exponents only.

A. p9
B. p14
C.
D.

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