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:

(pic in replies)

What is the distance between the walls?

30 m
40 m
50 m
70 m

Answer 1

@snowflake0531

Answer 2

Do you know your 45, 45, 90 triangle and 30, 60, 90 triangles?

Answer 3

i think?

Answer 4

1, 1, sqrt2
1, 2, sqrt3

So what is hte length of the left side

Answer 5

...30?

Answer 6

Yes
and how much is the right?

Answer 7

hint: it's half of 80

Answer 8

40 owo

Answer 9

sorry i got distracted

Answer 10

so 40+30

Answer 11

70.

Answer 12

is that the answer??

Answer 13

ye

Answer 14

otay thank you

Answer 15

yw~