Question

If a right triangle has legs of `x` and `3x` and a hypotenuse of `10`, what is the value of `x`?

Answer 1

`x=sqrt(10)`

Explanation:

Sides are x and 3x, hypotenuse is 10.

Use Pythagorean theorem

`x^2+9x^2=100`

`10x^2=100`

`x^2=10`

`x=sqrt(10)`