What is the relation between y=sinx and y=cosx ? Explain it in 3-5 sentences..

Answer 1

If the graph of y = cosx is translated π/2 units to the right, we get the graph of y = sinx. This means that the equation cos(x - π/2) = sinx is an identity. Alternatively, translating the graph of y = sinx π/2 units leftward yields the graph of y = cosx. So, the equation sin(x + π/2) = cosx is an identity as well.