If the sales tax is 8% . what is the total cost of a $55 pair of shoes

I'm confused on how to solve the triangle. can someone me ?

Which of the following statements is true? a. sin 18° = cos 72° b. sin 55° = cos 55° с. sin 72° = cos 18° d. bоth a and c.

Write an equation of the parabola with the focus point of (0,1/3) and vertex at the origin. use x for the independent variable. explain. need !