Help Demian with basic trigonometry

[Demian]

No. I'm not asking you to do my homework. This is stuff I should already know but forget me I don't remember it anymore. Okay then.

I know the very basic stuff for example solving Y when Z and X are known. Sine, cosine, and tangent. Piece of cake.



My problem is this: How do I solve X when Y and a are known? What is the name of the function or something?

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[keesfani]

you use tan



X = Y * tan(a)

[Jacob 123456789]

this is really basic lol

problem is, I don't remember it either :x

[Demian]

Oh. Wait. Then how do you solve X when Y and Z are known?

[Narkro555]

Pythagorean theorem

[keesfani]

Oh. Wait. Then how do you solve X when Y and Z are known?

X = Sqrt(Z² - Y²)

[keesfani]

Pythagorean theorem

damn you ninja 

[Daedalus]

tangent
remember the functions like this
SOH
CAH
TOA

Sin = opp/hyp
Cos = adj/hyp
Tan = opp/adj

X is the opposite angle from a, and Y is the adjacent. So you could set it up like this:
Tan (a) = X/Y

[ShadowsfeaR]

tangent
remember the functions like this
SOH
CAH
TOA

Sin = opp/hyp
Cos = adj/hyp
Tan = opp/adj

X is the opposite angle from a, and Y is the adjacent. So you could set it up like this:
Tan (a) = X/Y

Beat me to it

[Demian]

Oh yeah. Now I remember it. Thanks guys.

[matthewbim11]

Teach me how to math. I'm in Algebra 1 honors.

[._maxwell23461_.]

b to the a to the iuv