Respuesta :

Answer:

The answer is 15 units!!

Step-by-step explanation:

[tex]17^{2} -8^{2} = 225\\\sqrt{225} =15[/tex]

Applying the tangent theorem, for ZY to be tangent to circle X at point Y, the length of ZY must be: B. 15 units.

What is the Tangent Theorem?

The tangent theorem states that, if a line is tangent to a circle, it will form a right angle atr the point of tangency where it meets the radius of the circle.

Thus, the length of ZY would be:

ZY = √(17² - 8²)

ZY = 15 units.

The length of ZY must be: B. 15 units.

Learn mroe about the tangent theorem on:

https://brainly.com/question/9892082

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