已知α为锐角,且根号3tan^2α-(1+根号3)tanα+1=0,则α=
问题描述:
已知α为锐角,且根号3tan^2α-(1+根号3)tanα+1=0,则α=
答
根号3tan^2α-(1+根号3)tanα+1=0,
(根号3tanα-1)(tanα-1)=0
已知已知α为锐角,
则tanα=根号3/3 α=30°
或tanα=1 α=45°
所以α=30°或45°