You can use any letter but when you label it x you find x
Answer:
D) 140°
Step-by-step explanation:
The total number of degrees in a triangle is 180. Since both sides of the triangle are the radius of the circle, the triangle is isosceles. Therefore the two opposite angles are equal. Thus, the central angle is 180° − 2(20°) = 140°.
The value of z would be 5.6
20^2 + (x-8)^2 = x^2
x^2 = 400 + x^2 -16x + 64
16x = 464
x = 29 = hypotenuse
Double - Check
29^2 = 20^2 + 21^2
841 = 400 + 441
Answer:
y = 120°
Step-by-step explanation:
angles in a triangle add up to 180 degrees
180 - (87 +33) = 60
x = 60 degrees
angles on a straight line add up to 180 degrees
180 - 60 = 120
y = 120
