Pythagoras Theorem

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With Pythagoras theorem we can find the lengths of a side in a right angled triangle given the other two sides.

With the sides of the triangle as labelled above, we use the formula

For example

It is important to label the sides of the triangle a, b and c in the way shown above. If you remember that c is the longest side then labelling becomes easier. Then you must use these values in their correct position in the equation 


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