Answer:
Step-by-step explanation:
tan47=x/18
x=18tan47
cosCDB=7/x
cosCDB=7/(18tan47)
CDB=arccos(7/(18tan47))
CDB=68.74
I posted what I have in the other post it's same question
I believe it's around 50 miles.
The answer is:
19827364918234 * 918234719283741=1.82061749e28