Question 254188
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Use Pythagoras:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ b\ =\ \sqrt{25^2\ -\ 20^2}]


Or note that 25 is 5 times 5 and 20 is 5 times 4, so the other leg of the triangle has to be 3 times 5 equals 15.



John
*[tex \LARGE e^{i\pi} + 1 = 0]
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