- anonymous

A 7-foot ladder is leaned against a building in such a way that the bottom of the ladder is 4 feet from the base of the wall. Find the angle formed between the ladder and the ground.
A) 30 degrees
B) 35 degrees
C) 55 degrees
D) 60 degrees

- katieb

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- anonymous

- anonymous

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- anonymous

Do you know what trig function to use given what information you have?

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## More answers

- anonymous

Anyone know this?

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- anonymous

im not sure i know im trying to solve right triangles @larryboxaplenty

- anonymous

Summer, solve for the missing side

- anonymous

Is this geometry or trig class?

- anonymous

geometry

- anonymous

if you help me ill help you

- anonymous

i know the answer

- anonymous

I remember learning some trig in geo.
You want to use one of the 3 most basic trig functions, don't think about cotan, csc, or sec for now

- anonymous

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- anonymous

Its 55

- anonymous

Summer, I will try to help you if you post it was a question :)

- anonymous

okay i posted a question

- anonymous

You want to use either sine, cosine or tangent, abbrev. sin, cos or tan respectively

- anonymous

i think its cos

- anonymous

There are three sides of a triangle: the hypotenuse, the long leg, and short leg. Yes, it is cosine

- anonymous

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- anonymous

Cos(theta), where theta is some angle, is adjacent/hypotenuse

- anonymous

Some say SOH CAH TOA but I remember it as:

- anonymous

ITS 55

- anonymous

Sine (Oscar Has)
Cosine (A Hairy)
Tan (Old As- ...er...Arm)

- anonymous

for yours

- anonymous

isnt it 8.9?

- anonymous

O is the opposite site of the angle, hypotenuse is the longest side, and adjacent is the side next to the angle

- anonymous

i dont know how to figure it out

- anonymous

Can u just give me the answer i got to go to work

- anonymous

You have to use arccosine in order to find the angle

- anonymous

Think of it like this: if cos(x) = (4/7) then arcos(4/7) = x

- anonymous

who are u talkinng to??

- anonymous

ive tried doing that @larryboxaplenty

- anonymous

arccos looks like cos^-1(x), but the -1 is not an exponent, it's a just a symbol. So you don't actually take it to the -1 power

- anonymous

????//

- anonymous

@Summeriscool , Den this whole time

- anonymous

?

- anonymous

https://www.wolframalpha.com/input/?i=arccos%284%2F7%29

- anonymous

*arcos(4/7) = 55.15 degrees ~55 degress

- anonymous

AND YOU DIDNT WANT TO LISTEN

- anonymous

SAID 55 A MILLION TIMES

- anonymous

shouting the answer won't make the learn anything :P

- anonymous

i needed to LEARN how to figue it out. kk @Summeriscool

- anonymous

I DIDNT I GAVE THE

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- anonymous

Do you know which sides of the triangle are what, even if the angles are at different sides?

- anonymous

sin/cos/tan are all relative to the angle, so adjacent and opposite can get mixed up sometimes :p

- anonymous

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- anonymous

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- anonymous

Here, sin(C) can get confusing :P

- anonymous

Unless you know the sin(90 degrees) :P

- anonymous

Do you need anything else?

- anonymous

MY ANSWER

- anonymous

Sorry, I haven't took calc in a while, I can't hep you there

- anonymous

NOW YOU SAY THAT

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