CPhill

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We have

sin^-1(11/15) = 47.16°

Don't feel bad, BJ....I got sucked in, too.....!!!!

That's 10 seconds that person owes us......LOL!!!!

The same line.....equation two is just a multiple of equation one.....

A  = (1/2)(12)(8)sin(50)  =  about 36.77 sq. units

We have

tan57 = opp / 21    where the opp is the building ht ....multiply both sides by 21

21tan 57 = opp = about 32.34 m

Here's a pic.....

This is just a 5-12-13 Pythagorean "Triple" right triangle.....so SE = 13

I assume this is

9 < x/14 + 6       subtract 6 from both sides

3 < x/14             multiply both sides by 14

42 < x

LOL!!!