14. Viewed from Earth, two stars form an angle of 83.23°. Star A is 33 light-years from Earth, and Star B is 21 light-years from Earth. Find out how many light-years the stars are from each other.

I'm very confused, I know it deals with law of Cosine, but I'm just having so much trouble with this.

Question

14. Viewed from Earth, two stars form an angle of 83.23°. Star A is 33 light-years from Earth, and Star B is 21 light-years from Earth.  Find out how many light-years the stars are from each other.

I'm very confused, I know it deals with law of Cosine, but I'm just having so much trouble with this.

anonymous · Answer

|dw:1429682823193:dw|

anonymous · Answer

|dw:1429682926284:dw|

anonymous · Answer

I think I have the gist fo the formula

anonymous · Answer

33^2+21^2 - 2(33)(21)COSAOB

But I don't know how to find CosAOB

anonymous · Answer

cos(83.23) ?

anonymous · Answer

AH wait is that equation right?

anonymous · Answer

What does that equal >.< my calculator isn't wanting to load

anonymous · Answer

https://www.google.com/#safe=off&q=cos(83.23+degrees)+

anonymous · Answer

I got 286.612725306