Question

which of the following represents the length of ACA. 7²- 4²B. √7²+4²C. √7²-4²D. 7²+4²

Answer 1

Solution

For this case we have a right triangle so then we can do this:

$7^2=4^2+x^2$

We can solve for the value of x and we got:

$x=\sqrt[]{7^2-4^2}$