Given the following sinusoidal current$-$& voltage waveforms.

a$)$Describe U$($t$)$& I$($t$)$in arbitrary form $($using only parameters, not explicit values$).$

b$)$Determine values for all parameters used in the arbitrary description above.

c$)$Determine the phase difference Between U and I $-$between voltage and current

Note: For the following calculations please use the following values for U$($t$)$& I$($t$)$ : frequency is $150$ Khz$,$ u$\_$ is $2$V$,$ I$\_=7$mA$,$ phase difference I,U is $=80$ degrees;

d$)$Sketch an equivalent circuit of two components connected in series that would form such voltage$-$current waveforms and calculate its component values.

e$)$Calculate the active power of this circuit