Question

Find the value of x rounded to the nearest hundredth.

Answer 1

`x=6.93\ units`

Explanation:

To better understand the problem see that attached figure with letters

we know that

In the right triangle BCD

`cos(C)=4/x` ----> equation A

we know that

In the right triangle ABC

`cos(C)=x/12` -----> equation B

equate equation A and equation B

`(4)/(x)=(x)/(12)\\ \\x^(2)=48\\ \\x=6.93\ units`