Solve the problem.
-The voltage $\mathrm { E }$ in an electrical circuit is given by $\mathrm { E } = 3.1 \cos 140 \pi \mathrm { t }$, where $t$ is time measured in seconds. Find the amplitude.
A) $3.1$
B) 140
C) $6.2$
D) $140 \pi$

Question

Quizplus · Accepted Answer

The amplitude of a cosine function is the coefficient in front of the cosine, which in this case is 3.1.

Solve the Problem E\mathrm { E }E In an Electrical Circuit Is Given By

Solve the Problem $\mathrm { E }$ In an Electrical Circuit Is Given By