Question

Solve for y. Please help!!

Answer 1

Answer:

$y=3\sqrt{7}\ units$

Step-by-step explanation:

see the attached figure with letters to better understand the problem

we know that

In the right triangle ABD

$tan($

In the right triangle BCD

$tan($

remember that

m< BAD=m<CBD

therefore

$tan($

equate the equations

$y/9=7/y$

$y^{2}=63$

$y=3\sqrt{7}\ units$