How do you find the unknown length of a right triangle a=8, b=17 are the given side lengths?

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Answer 1 · 2018-07-01T18:01:15

Unknown length is #18.79#.

If #a# and #b# are side lengths in a right triangle, the third side is hypotenuse and is given by

#sqrt(a^2+b^2)#

Hence third side in given right triangle is

#sqrt(8^2+17^2)#

= #sqrt(64+289)#

= #sqrt353#

= #18.79#