Use the fundamental identities to find the value of the trigonometric function.
-Suppose that a household appliance draws a current represented by the relation $\mathrm { I } ( \mathrm { t } ) = 7 \cos ( 120 \pi \mathrm { t } )$, where $t$ is time measured in seconds. The power consumed by the appliance is $P = I ^ { 2 } R$, where $R$ is a constant. Take $R$ to be 16 and graph the power in [0,0.04, 0.01] by [-200, 2000, 200] and use an identity to write the expression for the power in the form $P = a \cos ( k \pi t ) + d$, where $a$, $k$, and $d$ are constants.
A) $P = 392 \cos ( 240 \pi t ) + 392$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$
B) $P = - 392 \cos ( 240 \pi t ) + 392$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$
C) $P = 392 \cos ( 120 \pi t ) + 392$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$
D) $P = 784 \cos ( 240 \pi t ) + 784$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$

Question

Use the fundamental identities to find the value of the trigonometric function.
-Suppose that a household appliance draws a current represented by the relation $\mathrm { I } ( \mathrm { t } ) = 7 \cos ( 120 \pi \mathrm { t } )$, where $t$ is time measured in seconds. The power consumed by the appliance is $P = I ^ { 2 } R$, where $R$ is a constant. Take $R$ to be 16 and graph the power in [0,0.04, 0.01] by [-200, 2000, 200] and use an identity to write the expression for the power in the form $P = a \cos ( k \pi t ) + d$, where $a$, $k$, and $d$ are constants.
A) $P = 392 \cos ( 240 \pi t ) + 392$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$ 
B) $P = - 392 \cos ( 240 \pi t ) + 392$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$ 
C) $P = 392 \cos ( 120 \pi t ) + 392$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$ 
D) $P = 784 \cos ( 240 \pi t ) + 784$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$

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The Answer of Use the fundamental identities to find the value of the trigonometric function.
-Suppose that a household appliance draws a current represented by the relation $\mathrm { I } ( \mathrm { t } ) = 7 \cos ( 120 \pi \mathrm { t } )$, where $t$ is time measured in seconds. The power consumed by the appliance is $P = I ^ { 2 } R$, where $R$ is a constant. Take $R$ to be 16 and graph the power in [0,0.04, 0.01] by [-200, 2000, 200] and use an identity to write the expression for the power in the form $P = a \cos ( k \pi t ) + d$, where $a$, $k$, and $d$ are constants.
A) $P = 392 \cos ( 240 \pi t ) + 392$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$ 
B) $P = - 392 \cos ( 240 \pi t ) + 392$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$ 
C) $P = 392 \cos ( 120 \pi t ) + 392$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$ 
D) $P = 784 \cos ( 240 \pi t ) + 784$ $[ 0,0.04,0.01 ]$ by $[ - 200,2000,200 ]$

Use the Fundamental Identities to Find the Value of the Trigonometric