We have three different ways to the solution.
1.
It's a right triangle and <span>isosceles triangle.
The formula of the hypotenuse of this triangle:
h - the hypotenuse
a - the leg
therefore
</span>
<span>2.
Use the Pythagorean theorem:
</span>
<span>3.
Use trigonometric function:
</span>
1.
It's a right triangle and <span>isosceles triangle.
The formula of the hypotenuse of this triangle:
h - the hypotenuse
a - the leg
therefore
</span>
<span>2.
Use the Pythagorean theorem:
</span>
<span>3.
Use trigonometric function:
</span>