Matematika A - 2016. ljeto, 4.

$\beta ={54}^{\circ }\backslash beta=54^\{\backslash circ\}$

$\beta ={63}^{\circ }\backslash beta=63^\{\backslash circ\}$

$\beta ={75}^{\circ }\backslash beta=75^\{\backslash circ\}$

$\beta ={81}^{\circ }\backslash beta=81^\{\backslash circ\}$