Question

HELP!!MEDAL!
A 20-foot ladder is leaning against a wall. The base of the ladder is 3 feet from the wall. What angle does the ladder make with the ground??

Answer 1

One question.
How far is the base of the ladder from the wall..? The value's missing.

Answer 2

3

Answer 3

Okay so put 3 in that diagram.
Now from the SOHCAHTOA mnemonic, which trig function do we use on this problem?
Sin - opposite and hypotenuse
Cos - adjacent and hypotenuse
Tan - opposite and adjacent

Answer 4

Cosine

Answer 5

Yeah, cosine.

Answer 6

Do you know where to go from here or are you still lost? :p

Answer 7

I'll try to solve it

Answer 8

Okay :)
I'll be here ^^

Answer 9

Thanks

Answer 10

?
You got it? :O

Answer 11

Is the 15 the angle??

Answer 12

um... did you arcos the cos fraction?

Answer 13

arcos is also known as this on the calculator:\[\cos^{-1}\]

Answer 14

Yes and I got 15

Answer 15

Oh wait no my bad

Answer 16

okay

Answer 17

Did you get a fraction \[\frac{3}{20}?\]

Answer 18

Yes

Answer 19

I got 81.37

Answer 20

From this?\[\cos^{-1} \frac{3}{20}\]

Answer 21

Yes

Answer 22

Okay you have the right answer :)
Sorry for the late reply! ^^;

Answer 23

Thanks