Identify the graph above.
y = sin x
y = sin-1x
y = cos x
y = cos-1x
This is a reflection of the graph of y = sin x across the line y = x so it represents sin-1x .
if X sin^3A + Y cos^3A = (sinA)(cosA) and X sinA = Y cosA , prove that X^2 + Y^2 = 1