Question

I need help to find out this question

Answer 1

We know that line WJL is a straight line, so all angles formed on it add up to
`\ang{180}`.

We know that angle WJH is
`\ang{18}` and angle HJG is
`\ang{90}` (right angle), so that leaves angle GJL to be:

`18 + 90 + GJL = 180`

`108 + GJL = 180`

`GJL = 72`

Now we can solve for
`x`:

`GJL = 9x = 72`

`9x = 72`

`x = (72)/(9)`

`x = 8`