Express the shaded part of the picture as a fraction a. 5 ∕9 b. 9 ∕5 c. 4 ∕9 d. 9 ∕4

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Adeposit of 5500 at 6% for 3 years equals

Find the exact value of cos(arcsin( one fourth for full credit, explain your reasoning. (2 points)