100% Triangle ABC is Inscribed in circle K and AC is a diameter of the circle.
K K
500
Choose one correct value for y and one correct value for z
O A y = 40
D. z=50
B. y = 50
E. Z=80
c. y = 80
OF z = 90

cosine

step-by-step explanation:

(hint): the answer is in the question.

secant-secant formula:

(whole secant) x (external part) =           (whole secant) x (external part)

(8+y-2) *8=                                           (y+4+6) *6

(y+6)*8 = (y+10) *6

distribute

8y+48 = 6y +60

subtract 6y from each side

2y +48 = 60

subtract 48 from each side

2y = 12

divide by 2

y = 6

sv =     (y+4+6)

sv   = 6+4+6

sv = 16

the answer is c.

perimeters = 3√10/5

areas = 90/25

i got it down chief.