Solve the Problem $\mathrm { v } = 156 \cos \left( 120 \pi \mathrm { t } - \frac { \pi } { 3 } \right)$

question 224

Multiple Choice

Solve the problem.
-The output voltage for an a.c. generator is approximated by $\mathrm { v } = 156 \cos \left( 120 \pi \mathrm { t } - \frac { \pi } { 3 } \right)$ . Find the smallest positive value of $t$ for which the output is 68 volts. (Use $3.1416$ as an approximation for $\pi$ .)

• A) \(t = 0.0124\)
• B) \(t = 0.0114\)
• C) \(\mathrm { t } = 0.0047\)
• D) \(t = 0.0057\)

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Definitions:

Homosexual

An individual who is romantically or sexually attracted to people of their own sex.

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Parents who identify as heterosexual, meaning they are attracted to members of the opposite sex.

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The study or exploration of the factors, including biological, genetic, social, and environmental, that contribute to the development of a homosexual orientation.