When an alternating current of frequency f and peak current i0 passes through a resistance r, then the power delivered to the resistance at time t seconds is p= i0^2 r sin^22 pi ft. write an expression for the power in terms of cos^2 pi ft.

here’s the answer.

Step-by-step explanation:

The coordinates of a point satisfies the equation of a line if the point lies on the line

If a single point satisfies the equations of two lines, the point is on both lines, so the lines will intersect at that point.

This means that each point where the two lines touch is a solution to the system of equations

This means that if you substitute the x and y values of the point for x and y in the equations, both equations will be true.

hope this helps!..