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How do you use Pythagoras' Theorem?

Pythagoras' Theorem states that h2 = a+ b2 . This is where you have a right angled triangle, with sides a, b and h where h is the hypotenuse. For example, if we had a triangle with sides of length 3 and 4, and we are trying to find the hypotenuse we would first find h2

This means that h2 = 3+42

so h2 = 9 + 16

so h2 = 25

therefore the hypotenuse is the square root of 25, so in this case, the hypotenuse would be 5.

Ryan B. GCSE Chemistry tutor, A Level Chemistry tutor, GCSE Physics t...

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