Question

The picture shows a barn door.
http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0400_Subtest_02_08/image0104e271d59.jpg
What is the distance BC between the two horizontal parallel bars?

4/cos 45

4 sin 45°

4/tan 45

4 tan 45°

Answer 1

I think the answer is B? but I just don't know

Answer 2

it isn't sin because you're trying to find the opposite and you have the adjacent so you're going to use tan

Answer 3

\( \color{Black}{\Rightarrow \tan 45 = \Large{BC \over 4} }\)

Answer 4

I believe it is D
tan 45=x/4
4(tan 45)=x

Answer 5

Gotta multiply 4 to both sides.

Answer 6

If you have to find the hypotenuse, then you may use \(\cos\).

Answer 7

@rebeccaskell94 did you understand?

Answer 8

You just gotta keep it to a ratio where you have a side that is known, and then there's a side that you have to find.

Answer 9

Ah! Comprende thank you both. If I medal J.L, can J.L medal Parth? I want you both to get a medal. :)

Answer 10

If you have to find the opposite, then you will use a ratio where we have opposite and adjacent. \(\tan\) will be a choice right here.

Answer 11

My mistake. It'd be a ratio where we have the hypotenuse and opposite. Therefore, \(\sin\).

Answer 12

@rebeccaskell94 This will help you attempt all the questions. Remember: Ratio where you got the known and the wanted side.

Answer 13

Rap it, eat it, digest it, assimilate it, excrete the waste and the moment you completed, you are a legend at Trigonometry.

Answer 14

Oh wait, sorry. Is the answer here C?

Answer 15

It's D