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Help guys please !!!

Help Guys Please class=

Sagot :

Answer:

is this for a Trig class?     as follows

Step-by-step explanation:

we need SOH CAH TOA   to help us remember the sine and cosine and tangent relationships in a triangle

soooo.........

SOH  is   Sin ( Ф ) =  Opp /  Hyp  

CAH is Cos ( Ф ) = Adj / Hyp

TOA is Tan ( Ф ) = Opp / Adj

since we know one angle and one side.. but not the Hyp side.. let's use TOA

tan(60) = Opp / 2

2* tan(60) = Opp

now you have to have the sin and cosine table in your memory :O   do you?

if you remember that tan =  sin/ cos this will help then if you remember that sin(60) = [tex]\sqrt{3}[/tex]/2  that will help too

cos(60) = 1/2  then make those both in a a fraction together

the twos will cancel out and leave [tex]\sqrt{3}[/tex]  so thats what tan(60) is, or just have tan(60) on speed dial in  your brain  :P  to remember it.  anyway.....

so you now know... 2[tex]\sqrt{3}[/tex] = y     on our triangle  

now we'll need Pythagorean theorem formula   C^2 = A^2 + B^2

put what we know into the formula

[tex]C^{2}[/tex] =  [tex]2^{2}[/tex] +(2*[tex]\sqrt{3}[/tex])^2

[tex]C^{2}[/tex] = 4 + 4*3

[tex]C^{2}[/tex] = 4 + 12

[tex]C^{2}[/tex] = 16

C = 4  

so x = 4

y = 2[tex]\sqrt{3}[/tex]