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:

A source of laser light is at point A on the ground between two parallel walls. The walls are perpendicular to the ground. AB is a ray of light which strikes the wall on the left at point B. The length of AB is 60m.AC is a ray of light which strikes the wall on the right at point C which is 40m above the ground. The ray AB makes an angle of 60 degrees with the ground. The ray AC makes an angle of 45 degrees with the ground.

What is the dista

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:

A source of laser light is at point A on the ground between two parallel walls. The walls are perpendicular to the ground. AB is a ray of light which strikes the wall on the left at point B. The length of AB is 60m.AC is a ray of light which strikes the wall on the right at point C which is 40m above the ground. The ray AB makes an angle of 60 degrees with the ground. The ray AC makes an angle of 45 degrees with the ground.

What is the dista

tteesstt8080 · Answer

Picture?

xlpoisonpotato · Answer

hang on

xlpoisonpotato · Answer

http://learn.flvs.net/webdav/assessment_images/educator_geometry_v16/image0034e2d6d6f.gif

campbell_st · Answer

|dw:1479754667475:dw|

so does your diagram look like this..? It may be a mirror image

xlpoisonpotato · Answer

yeah

campbell_st · Answer

so are you asked to find the distance BC?

xlpoisonpotato · Answer

no the distance between the walls

campbell_st · Answer

ok... so then I'd assume the walls are perpendicular to the floor... 

you'll need trigonometry |dw:1479755006578:dw|

so I have included the right angles and labelled w2 sides x and y

the sum of x and y is the distance between the walls... 

Both questions are solved using the same trig ratio.... 

any ideas on what to use..sin, cos or tan..?