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In Canada, the electricity you commonly use from an outlet is an alternating current. This means the current moves back and forth to produce a voltage that cycles between positive and negative. The current makes 60 cycles per second.
The equation V = 170 cos (120πt) models the electrical current, where V is voltage and t is time in seconds.
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With a partner or group, discuss the following question based on your solutions to Try This 3.
How do your strategies for solving question 2 in Try This 3 compare?
If required, save a record of your discussion in your course folder.