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Solve for the length of the unknown side in the following right triangle. (Side AC is the hypotenuse.) Round your answer to two places, where applicable.
Side AB ?
Side BC=12
Side AC=19

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  1. Given ABC is a right triangle with AC being the hypotenuse, then angle B is a right-angle.
    Use Pythagoras Theorem to solve thus:
    AC²=BC²+AB²
    or
    19²=12²+AB²
    Solve for AB.

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  2. 144

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