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# Math: law of cosines, help?

Update:

Law of sines, not cosines, sorry for the mix up!

### 3 Answers

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- Engr. RonaldLv 72 months agoFavorite Answer
using this formula

. sin(E)......... sin(A)

----------- = -------------

....e................. a

Given :

sin(E) = 65

e = x

sin(A) = 75

a = 32 miles

Answer is choice B.

..sin(65)........sin(75)

------------ = --------------

......x..................32

- The GnosticLv 72 months ago
It's B.

When using the Law of Sines, sines are either all numerators, or all denominators, never both.

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