(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Solve triangle ABC...

A = 50 degrees

b= 15

c = 11

2. Relevant equations

Law of Cosine and Law of Sine

3. The attempt at a solution

since I have two sides and the angle in between, I used law of cosine to find a

a^{2}= 30^{2}+ 15^{2}- 2(30)(15)cos 50

a = 23.38

then since I have angle A and the opposite side a, I used law of sine to find the other two angles

sin C / 30 = sin 50 / 23.38 = sin B / 15

the problem with this is that I get two different values of B and C

if I solve for C, then C = 79.4 and B = 50.6 (180 - 50 - 79.4)

if I solve for B, then B = 29.4 and C = 100.6

which answer would be correct?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Simple Trig Question

**Physics Forums | Science Articles, Homework Help, Discussion**