Matematika A - 2016. ljeto, 4.

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

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

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

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