Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 7 - No. 32)
If you are given the lengths of the two legs of a right triangle, how do you find the hypotenuse?
Add the lengths together.
Subtract the smaller length from the larger length.
Use the Pythagorean Theorem.
Multiply the lengths together.
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The Pythagorean Theorem (a^2 + b^2 = c^2) is used to find the hypotenuse when you know the lengths of the two legs.