Look at picture below and answer.

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

Evaluate the expression. (9 + 5)(3 + 2)0