0.224969 rounded to 4 decimal places

1. supplementary angles

2. acd and bcd

step-by-step explanation:

c-   36

taxicab circle radius 9 has 4(9) = 36 points

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36