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|dw:1440790508463:dw|

which function you should use to find x ?

The Cos function?

which side is adjacent of 27 degree angle ?

Side KL with the 34 in the middle

kl is adjacent of theta
it's a opposite side of 27 degree angle not adj

Oh, yes. I forgot about the Theta,

to find length of x
you should know one angle and one side
so we would use sin function

|dw:1440790850611:dw|

different angles different sides

|dw:1440791024957:dw|

JK is n't opposite side of 27 angle

yep right solve for x

Okay, just a second :)

|dw:1440791173523:dw|

Then my answer was: 74.906

looks good

Are you sure everything looks right?

|dw:1440791354591:dw|

now divide 34/.4540

Yes, my answer is: 74.889, which will then round to 74.89. Which is B. :)

yes :=)

Could you possibly help me on another question?

i'll try

Okay, would you like it in a different post or here is fine?

doesn't matter :=) post that here i'm okay with it

okay use calculator then :D

How would I type that in though?

what is the reciprocal of cot ?

tan =1/cot or you can say it's equal to sin/cos

csc , sec and tan are reciprocal of sin ,cos and cot

csc = 1/sin
sin =1/csc

so if tan = sin /cos
cot = ?

1?

what is the reciprocal of sin/cos ?

tan.

okay so cot =1/tan
\[\huge\rm tan = \frac{ 1 }{ \cot }~~and~~ \cot =\frac{ 1 }{ \tan}\]

if tan equal sin/cos then
replace tan with sin /cos

Okay, so you're basically switching them around? With the originally formula.

just remember tan =sin/cos

yes right

now cot = ??

\[\huge\rm \frac{ 1 }{ \frac{ \sin }{ \cos } } = ?\]we can change division to multiplication right

Multiplying?

Why did you change b as the numerator and a as the denominator?

Oh okay, I understand.

so what is reciprocal of sin/cos ?

no just cos /sin

tan = sin/cos
and cot is `reciprocal` of tan then cot would be cos/sin

Okay, I understand what's going on now. So you'd fill in the 10 degrees with the cot function?

another example \[\huge\rm \cot (a) =\frac{ \cos(a) }{ \sin(a)}\]

yes you have to find cot (10 deg)
which is not in the calcualtor
so you should put cos(10)/sin(10)

cot(10) is same as cos(10)/(sin 10)

yes practice ,practice and practice you will become trig expert!