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单选题 已知
,则( )
A. cosα=
B. sinα=
C. sinα=
学科：中职数学
时间：2026-05-25 02:35:19
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题目1单选题
若<img src="https://tihai-oss-cloud.itihey.com/img/50663ad0aa4effd9980b249c241a2889.png"> 为第二象限的角,则有<img src="https://tihai-oss-cloud.itihey.com/img/def753c646e241c246409feae3828412.png"> 是( )A. 第一或第二象限的角B. 第一或第三象限的角C. 第一或第四象限的角D. 第二或第四象限的角
题目2单选题
已知<img src="https://tihai-oss-cloud.itihey.com/img/f14b2a151f4547642e67ae20dc5ab1c5.png"> ,则( )A. cosα=<img src="https://tihai-oss-cloud.itihey.com/img/c09efc756a5c0574bad177d9b82739a4.png">B. sinα=<img src="https://tihai-oss-cloud.itihey.com/img/44fc5ed1d50ff05955fc6e20870d8b1f.png">C. sinα=<img src="https://tihai-oss-cloud.itihey.com/img/cad0b297361aeb8952c46c6ad4bfd709.png">
题目3判断题
若<img src="https://tihai-oss-cloud.itihey.com/img/5c89a1653f69258bf7d305038b38e98e.png"> ,则<img src="https://tihai-oss-cloud.itihey.com/img/806abf7ec1ed6955fc3098bc2f1240ab.png"> 范围内只有一个值( )A. 对B. 错
题目4单选题
若函数<img src="https://tihai-oss-cloud.itihey.com/img/31e4b56b4fa8d00eaca4ff69dce70ad8.png"> 是减函数,且其值为负,则<img src="https://tihai-oss-cloud.itihey.com/img/5f6d37ed1cecc70446f0f558f9ad8bdc.png"> 为 ( )A. 第一象限角B. 第二象限角C. 第三象限角D. 第四象限角
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题目6单选题
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题目7单选题
化简 <img src="https://tihai-oss-cloud.itihey.com/img/661f094927b38c89188cef526b07a2be.png"> 的结果是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/44bc798f4745367e39edfc7ce390fbe3.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/fe85d496a851ef883e9657ce03d41042.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/d1c4647051ea45724b2dee0151b9438d.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/9cde86d56e86e741ddaa6c28abb8f59b.png">
题目8单选题
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题目9单选题
不等式2|x|﹣1>5的解集为( )A. (﹣∞,﹣3)∪(3,+∞)B. [﹣3,3]C. (﹣∞,﹣3]∪[3,+∞)D. (﹣3,3)
题目10单选题
不等式|2x﹣5|≥3的解集是( )A. [1,4]B. (﹣∞,1)∪(4,+∞)C. (1,4)D. (﹣∞,1]∪[4,+∞)
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