iii. A complex waveform is given by the expression:

i $=5$ sin$(50$pi t$)+3$ sin$(200$pi t $-$ pi $/2)+1\mathrm{.}5$ sin$(50$pi t $-$ pi$/2)$ mA

Describe using the above example:

$1.$ the amplitude of the fundamental;

$2.$ the frequency of the fundamental;

$3.$ the order of any harmonic components present;

$4.$ the amplitude of any harmonic components present;

$5.$ the phase angle of any harmonic components present $($relative to the fundamental$).$