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在Rt△ABC中,∠C=90°,tanA=,AC=4,则BC=________.
试题详情
在Rt△ABC中,∠C=90°,tanA=
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC3SURBVDhPvZPREYQwCESpjJ5oJ81QCqVwIYkI
ZE4/9G5nohN9hk1YQW/0FsCkADAHNpXxcApUmiLxmrKSQT7vgDCnL6RhWmX3YOXiCuvuYgIN7wuQ
/EwFQLQhdZtZDjChtuh2aQDmPK3cjR5zMFN+SD7OUtsuqv4B7AbPMYBxvdBbgDXpqL03q6fIAzIT
ldstkhJ1nYeSJpMD3rRvwNAyiyEYGeh6mmrLZd1F/O3KGZj2EkU/B1Q/OMXg8M5WPjcAAAAASUVO
RK5CYII=
)
,AC=4,则BC=________.
相关试题
-
在Rt△ABC中,∠C=90°,AC=5,BC=4,则tanA=________.
-
在Rt△ABC中,∠C=90°,AC=5,BC=4,则tanA=________.
-
选择:在Rt△ABC中,∠C=90°,tanA=
,AC=6,则BC的长为( )
A.6
B.5
C.4
D.2
-
已知Rt△ABC中,∠C=90°,tanA=
,BC=8,则AC等于________.
-
在Rt△ABC中,∠C=90°,AC=5,BC=4,则tanA=________.
-
在Rt△ABC中,∠C=90°,若AC=2BC,则tanA的值是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACeSURBVDhP3ZLREQMhCESpjJ5oh2YohVIIoGcg
Xi4/l3xkZ/BG54l7q2AfdCegbAhorHM+NQAhAwCvd0BKjP4cyJAih1EkuZoqHc71C+AwdlYJ5Hih
u4D1YLyQrYYJmeKKLuJ2qEQJKtJ2KGPrsnuI42qH+V0Surqs5meoAGqM5Da7FiC0P5ZQAuG8dXaj
xxzCVL2gUc+jtr941dcBswdgFekEiSLONQAAAABJRU5ErkJggg==
)
B.2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAkCAYAAACAGLraAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAD4SURBVEhL1ZQxEoQgDEVzLgqOY89NqDkILQfZ
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ghOd7qMX1hJkgkki3aR5JEhQMat6APrjigdHXpIF0YC6/gree5pYBajsh+ZTQZOgQEmuFJIgGKEG
R3wwpWgEacd4fr0mIP8dGsHHKgRlxQSc7s6UYkuQ2BY8IW72K9DTQQI6bvDHgrsOxLkRxA4kPFQz
FgTT/bJ3DARVBwITs8iIRRx1II4oSPAOxJkKZgVdE+wk4B2I0wsmHYiz8AoyrxcgfgHGDwqh8+pT
FwAAAABJRU5ErkJggg==
)
D.
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(2009•盐城一模)在Rt△ABC中,∠C=90°,tanA=
,BC=9,求AC、AB的长.
-
在Rt△ABC中,∠C=90°,tanA=
,AC=4,则BC=________.
-
在Rt△ABC中,∠C=90°,若AC=2BC,则tanA的值是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACfSURBVDhP3VNBDsAgCOvL+BPf4TM8hacwmZnD
uc2L2WEmxphgi22BTxYWFpg4gVysx6wUyg6g7KeCWuX884JdpNChbtZTrJVePNg6pzgauzsDdI6w
KFEtMEUoEs+hgoeKTboITSlKUsJUuxcm1KGMvwi6jHD9hfKbWV0/9WmiMBfiku27udhHY5yJhhCd
55DEIB13RFOjUSfVZ2a9eL4BYBXpBOX9qe0AAAAASUVORK5CYII=
)
B.2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAkCAYAAACAGLraAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAEQSURBVEhL1ZXBDcMgDEU9FwfGyZ1NODMIVwbJ
gVFcoEkD1NjOKW2kSlXlPn++zQ8g8QAAaj71r7ACUL+Ttf8DyMFevtiA+ZCu9CChc4m0RQdIAcPZ
csIoABmDPcbaST85CsDVMrkKsoOaW4CKamZ2fgDG7XB3+7SqW7h8ckDbTyHG2Gq9ATR+b99FwKDg
bNWUvFVwgOQYD7YivaoYAFVyd7nmdRgOu3uDYDx/BGkPqgrWAwkgeTBPh5mXLhGKWl36UHVNra7P
uuqHAasEUk6hJBBx9yknaA+Sw0WCfTEIQJdA4DAJY2KnQCWQ0oOrbE6g2wAsh+AMVSzS+p2gWuU5
geQjCAkkA27eLoUHPPF5wAvGDwqhNzcF4QAAAABJRU5ErkJggg==
)
D.
-
已知Rt△ABC中,∠C=90°,tanA=
,BC=8,则AC等于( )
A.6
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAAjCAYAAABLuFAHAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADoSURBVEhL1ZTRFcMgCEWdzJ1cx2UYhVEoaGoA
LabtR5t7DjmJ5sGDDxJ9wa/FWCmnREmiQDsaQOnnErkSHscCi4HKOOR3/mnoJen46Hc6eSJEkw3K
KUYAc4c1m+q2Z7HobWvc/RBLxWXPCu1KsJWPweWqzR6Y/jtWzPi+Okg1Fx6ZZRKv+oaSaWXGiaWC
7UucmFyc/PmdWiUZ1BH6xzFEE6f92fYb3FU8D+RaNHF7fsi/iaPNoliIg83imMXBZvHEPW82y0vx
lc0SV442CxOLmfVm6WzFUd8b8bxZNLM42Cyeve2AW4qJHh9Xai7ASxFrAAAAAElFTkSuQmCC
)
C.10
D.12