Solve:
Ok, so I use the law of cosines, correct?
Now, when I input this into my ti83+:
I get -1.86075644e13
So, next I am supposed to multiply by the inverse cosine, right? But -1.8 is obviously not right, so what am I doing wrong?
Solve:
Ok, so I use the law of cosines, correct?
Now, when I input this into my ti83+:
I get -1.86075644e13
So, next I am supposed to multiply by the inverse cosine, right? But -1.8 is obviously not right, so what am I doing wrong?