A.\( \cos \alpha =0{,}8 \) i \(\operatorname{tg} \alpha =0{,}4\)

B.\( \cos \alpha =0{,}4 \) i \(\operatorname{tg} \alpha =1{,}5\)

C.\( \cos \alpha =0{,}8 \) i \(\operatorname{tg} \alpha =0{,}75\)

D.\( \cos \alpha =0{,}4 \) i \(\operatorname{tg} \alpha =0{,}75\)