试题 试卷
题型:填空题 题类:常考题 难易度:普通
(1)sinA=0.7,sinB=0.01;
(2)cosA=0.15,cosB=0.8;
(3)tanA=2.4,tanB=0.5.
=12+3×1+1,
=22+3×2+1,
=32+3×3+1,
猜想 =
【答案】20132+3×2013+1
点E.BC=1.8m,BD=0.5m,∠A=45º,∠F=29º.
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