## anonymous 3 years ago Given A = 67o, B = 13o, and b = 20.3, which of the following can be used to solve the triangle? a. Law of Sines b. Law of Cosines c. Hero's Formula d. Cannot be solved.

1. anonymous

those are degrees

2. anonymous

cosine formula is a good option

3. anonymous

Ah. Law of sines: $\frac{\sin(a)}{A}=\frac{\sin(b)}{b}$ Law of cosines is $c^2 = a^2+b^2 - 2ab\cos(C)$ So what are you given that can be used here?

4. anonymous

cannot be solved

5. anonymous

Sorry the law of sines should have been: $\frac{\sin(A)}{a}=\frac{\sin(B)}{b}$

6. anonymous

the angles

7. anonymous

oh and side b

8. anonymous

Yes it can. You have 1 side and three angles

9. anonymous

so law of sines?

10. anonymous

And i flipped all my capitol letters with the convention. Yes, Multiple uses of Law of sines would solve the triangle. You would have to do a 180-a-b to get angle c though...