In the triangle below, what is cos θ?
A. twelve-thirteenths
B. five-thirteenths
C. thirteen-twelfths
D. twelve-fifths

Question

In the triangle below, what is cos θ?
A.	twelve-thirteenths
	B.	five-thirteenths
	C.	thirteen-twelfths
	D.	twelve-fifths

i<3mybaby · Answer

@jcpd910 
@jdoe0001 
@johnweldon1993 
@iambatman 
@adrynicoleb 
@anonymous_user 
@jim_thompson5910 
@mathmate

adrynicoleb · Answer

Sorry, I don't know :/

i<3mybaby · Answer

:(

e.mccormick · Answer

Know your trig ratios?  SOH CAH TOA

i<3mybaby · Answer

Yes but I am just lost in steps and im like uggh

e.mccormick · Answer

Well, it is cosine, so CAH.

CAH means C=A/H or:
$\cos\theta=\dfrac{\text{Adjacent}}{\text{Hypotenuse}}$

i<3mybaby · Answer

ok

e.mccormick · Answer

So put the measure of the adj side over they hyp and then reduce the fraction to lowest terms.

i<3mybaby · Answer

its 5/13

e.mccormick · Answer

Opp and Adj mean Across and Next to.  They Hypotenuse is always the one related to the right angle, so it never changes.
|dw:1403566871041:dw|

Make sure you have your Adj correct for that angle.

i<3mybaby · Answer

OK....
`