What is the length of side x in the triangle below?
(picture below)

Question

What is the length of side x in the triangle below?
(picture below)

anonymous · Answer

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anonymous · Answer

The last angle will be 45 degrees also so you have an isosceles right triangle.  So,

15^2 + 15^2 = x^2

It's just the Pythagorean theorem.  You can use it.  It's just that you needed to know that the other side was also 15.

anonymous · Answer

x^2 = 2(15^2)        x = 21.21 or (15)(sqrt(2))

anonymous · Answer

damn i thought it was 10. i divided 450 and 45

anonymous · Answer

Well, that 45 is for the angle.  So the real key to this is realizing that the other leg is also 15.  From there it's just the Pythagorean theorem.  Don't worry if you didn't get it before, because you have it nailed now.

anonymous · Answer

ohhh ok

anonymous · Answer

The thing is that you understand it now and I think you do now.

anonymous · Answer

thx for the recognition!