Question 611124
http://www.mathsisfun.com/sine-cosine-tangent.html

you need to use sine and cosine to solve.
You are given an angle and the measure of the hypotenuse.
So find the adjacent side (a) {{{cosine(26.66) = adjacent/12}}}. Which solves as 10.72 for adjacent side
To find the opposite side (b) {{{sine(26.66) = opposite/12}}}. 5.38 for opposite