Hello :)

I am using the Sine rule to find the sides of a triangle and am stuck on one part.

http://i25.photobucket.com/albums/c7...000/maths3.jpg

How do you get the values which the two red arrows are pointing towards? I understand the rest, but have no clue how those 2 values have been worked out at all.

Really grateful for the help I have been getting here. I have a test tomorrow, so am panicking a bit.

Many thanks!

:)