Question

Problem in comments

Answer 1

I don't think that how you do it. @Study312

Answer 2

there is a triangle so we are going to find the area of that triangle because that is what's given to us

Answer 3

I looked it up and this is what I got http://www.jeepshoe.net/09-16/what-is-the-height-of-the-beach-sign/

Answer 4

the link says the answer is 5

height = 10 ft * sin(30)
= 10 ft * 0.5 = 5 ft