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Solve Apps: Trigonometric Equations
-The Output Voltage for An AC\mathrm { AC }

Question 52

Multiple Choice

Solve Apps: Trigonometric Equations
-The output voltage for an AC\mathrm { AC } generator is approximated by v=156cos⁡(120πt−π3) \mathrm { v } = 156 \cos \left( 120 \pi \mathrm { t } - \frac { \pi } { 3 } \right) . Find the smallest positive value of tt for which the output is 125 volts.


A) 0.00450.0045 second
B) 0.00350.0035 second
C) 0.00900.0090 second
D) 0.01000.0100 second

Correct Answer:

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