Can anyone sort this one out for me pleassseeeee......................................................................................Th e istantaneous current and voltage in an electric circuit are given by

i = I cos 50pi t

v = Vcos (50 pi t + pi/6)

determine an expression for the instantaneous power in the circuit, p = iv, as the sum of two cosines.

If I is 3mA and V is 5 V, calculate the maximum value of p, giving your answer in watts correct to three sig figures, and the first positive value of t at which it occurs.