Processing Math: Done

From Förberedande kurs i matematik 1

This exercise is somewhat of a trick question, because we don't need any trigonometry to solve it.

Two angles are given in the triangle (the 60° angle and the right-angle) and thus we can use the fact that the sum of all the angles in a triangle is 180°,

v+60+90=180

which gives

v=180−60−90=30.