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There is the Pythagorean relationship between the side lengths. Given a right triangle with sides a, b, & c : Sides a & b are adjacent to the right angle, and side c is opposite the right angle, and this side is called the hypotenuse.

Side c is always the longest side, and can be found by c2 = a2 + b2

The 2 angles (which are not the right angle) will add up to 90°

Given one of those angles (call it A), then sin(A) = (opposite)/(hypotenuse) {which is the length of the side opposite of angle A, divided by the length of the hypotenuse}

cos(A) = (adjacent)/(hypotenuse), and tan(A) = (opposite)/(adjacent).

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Q: What is the relationship among a right triangle?
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