Question

I don’t know how to do this i need help

Answer 1

See below.

Explanation:

You already have b correct, so let’s do d.

Remember the SOHCAHTOA rule (see image).

In this case, we can use either CAH or SOH. I’ll use CAH.

cos(45) = d/8

d = cos(45) * 8

d = 5.65 = 6