Tlong d jwb skrg ya...... Trmksh, beserta cara penyelesaian ny.. Jgn salfok sm Angka 30..

jawabanny kirakira 10°

alpa + beta = 90°
5 + 4 = 9
90 : 9 = 10
jadi...
[tex]5 \times 10 = 50 \\ 4 \times 10 = 40[/tex]

jadi jawabanny...
50 - 40 = 10