A:make a decision
B:give up
C:give advice
D:ask for help
已知∠A为锐角,求满足下列条件的∠A的度数(精确到1″).
(1)sinA=0.9816;
(2)cosA=0.8607;
(3)tanA=0.1890;
(4)tanA=56.78.
____(也许)Mr Hand isn't coming to your party.