Question

Urgent help

Answer 1

Do you know how to find the angle of elevation?

Answer 2

Law of sines also would work here

Answer 3

Yes,
sin (35)*20?

Answer 4

@ijakez

Answer 5

@blueweek77

Answer 6

No. Law of sines is sin(A)/a = sin(B)/b = sin(C)/c where the big letter is any angle and the small letter is the side length of the side opposite to it. Because you know that this is a right triangle, you know these are your angle amounts.

Answer 7

alright.

Answer 8

At this point, you can set up the law of sines equation properly, with knowledge of 1 side length and all angle lengths. It would be: \[\sin(35)/x = \sin(55)/20\] x is the side length you're trying to find.

Answer 9

However, at this point you aren't done! You have to account for the fact that his eyesight is elevated 5 feet off the ground. After you solve for x, remember to add 5!