In an isosceles right triangle, the two legs will be equal to each other. We can use the Pythagorean Theorem as follows:
a² + a² = 8.4² where 'a' is the length of the two equal legs
2a² = 70.56
[tex] a^{2} = \frac{70.56}{2} [/tex]
[tex]a= \sqrt{ \frac{70.56}{2} } [/tex]
a = 5.9 to the nearest tenth of an inch.
