A periodic function passes through the origin and then descends to a minimum of −23 when x=π2 . It passes through the x-axis again when x=π and rises to a maximum of 23 when x=3π2 before passing through the x-axis again when x=2π . What is the equation of the periodic function?(1 point) Responses y=−23cosx y equals negative Start Fraction 2 over 3 End Fraction cosine x y=−23sinx y equals negative Start Fraction 2 over 3 End Fraction sine x y=23sinx y equals Start Fraction 2 over 3 End Fraction sine x y=43sinx
The correct choice is:
y = -23cosx