Question

A source of laser light sends rays AB and AC toward two opposite walls of a hall. The light rays strike the walls at points B and C, as shown below:

Answer 1

What is the distance between the walls?

110.90 m

149.28 m

103.92 m <-- answer I got correct me if I'm wrong thx

173.20 m

Answer 2

well its correct 60 tan60 +40tan30

Answer 3

I was correct ?

Answer 4

pretty much it's simple trigonometry

Answer 5

thank you