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Given a right triangle #triangle ABC# with #C=90^circ#, if b=12, c=13, how do you find a?

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Aug 25, 2017

Given that #Delta"ABC"# is a right triangle, one can use the Pythagorean Theorem find the length of side a:

#c^2 = a^2 + b^2#

#a = sqrt(c^2-b^2)#

#a = sqrt(13^2 - 12^2)#

#a=sqrt(25)#

#a = 5#

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