For a right-angled triangle, follow these steps to calculate the length of a side, \(x\), when another side and an angle ÆŸ is given: Formula triangles ... be labelled as hypotenuse (\(h\)).
What it means is that in a right triangle (where one angle equals 90°), the sum of the squares of two sides equals the square of the hypotenuse (the longest side).
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