## suzy4321 3 years ago is it adjacent and hypotenuse and would i use cosine? *draw

1. jakobwhite

Yes. Just remember, SOHCAHTOA. Sin is Opposite/Hypotenuse. Cosine is Adjacent/Hypotenuse, and Tangent is Opposite/Adjacent. :)

2. suzy4321

|dw:1336019614405:dw| trying to find length ba

3. Study23

You would use cos. So, $$\ \huge cos(x)=\frac{8}{BA}$$.

4. suzy4321

alright i forgot to mention x=43 so id cosine 43 and multiply that by 8 ?

5. Study23

Close. So what it would like is $$\ \huge cos(43)=\frac{8}{BA}$$. Then you'll multiply by the variable BA, and to isolate the variable, divide by cos43. So what you'll be doing is: $$\ \huge length BA=\frac{8}{cos43}$$. Does that make sense to you?

6. suzy4321

yeah thanks

7. Study23

Np