Question

Find x in this right triangle

Answer 1

12

Explanation:

The Pythagorean theorem states that x^2 + y^2 = z^2 where z is the hypotenuse (the longest side)

We can rewrite this equation as x^2 + 9^2 = 15^2

--> 15^2 - 9^2 = x^2

--> x^2= 12^2

x= 12

We also know that angles of 3, 4, 5 is a right triangle.

If we multiply each by 3 we get 9, 12, and 15

Answer 2

x = 12

Explanation:

Hello!

We can use the Pythagorean Theorem to solve because this is a right triangle.

The Pythagorean Theorem is L² + L² = H²

We just substitute our leg and hypotenuse.

9² = 81

15² = 225

225 - 81 = 144

`√(144)` = 12

Thus,
`\boxed{x = 12}`.

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