Question 928854
<img src=" http://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Trigonometry_triangle.svg/200px-Trigonometry_triangle.svg.png ">
sin 60 = a/50,   50sin 60 = a = 43.3 rounded
cos 60 = b/50,   50cos 60 = b = 25
.......
cos 15 = 35/c
c = 35/cos 15 = 36.2347
a = sqrt(c^2 - 35^2) = 9.3782 rounded