In this triangle \(a^2 = b^2 + c^2\) and angle \(A\) is a right angle. Pythagoras' theorem only works for right-angled triangles, so you can use it to test whether a triangle has a right angle or not.
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Live Science on MSNHigh school students who came up with 'impossible' proof of Pythagorean theorem discover 9 more solutions to the problemTrigonometry is a branch of mathematics that lays out how the sides, lengths and angles in ... are only the third and fourth ...
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