试题 试卷
题型:解答题 题类:常考题 难易度:普通
(1)已知sinα=0.4771,求∠α;
(2)已知cosα=0.8451,求∠α;
(3)已知tanα=1.4106,求∠α.
(1)sinA=0.9816;
(2)cosA=0.8607;
(3)tanA=0.1890;
(4)tanA=56.78.
(1)sinα=0.46;
(2)cosα=;
(3)tanα=100.
试题篮