组卷网>知识点选题>定义法求三角函数值
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1 . 已知角eqIdc13953f2514e4c8f9c8aaaf5241c33ac的顶点在原点,始边与eqIda9cd3f94eb8045438f75e9daccfa7200轴的非负半轴重合,终边上一点eqId74a637bd3138450d8637bfee1ef4e9b2,且eqIdbf6b9566570b46579301eed2021e6511.
(1)求实数eqIda4be99d332154d13a4a6ed1ff6444fe7的值并计算eqId4bb447493caf4ea39f764763e3de0b96
(2)当eqId6a13e7b7d92849eba6c91758c54a673f时,求eqId6da54172e70d48faa45109d61b385783的值.
2 . 已知角eqIdc13953f2514e4c8f9c8aaaf5241c33ac的终边过点eqIdc2d26bf02697448bb81189789dab5058,则eqId93d4a5104d324b3c8bbdce2293903e0b的值为(   )
A.eqId5c1c12d4b3ba4aaab6267324ae66c81eB.eqId3f80dc1620e64fd9b24ce9582dee7f28C.eqId769fb397b9284071a3deda447d1d0b95D.eqId29c898c2f6d5480e84ed6cd0dfc0930b
填空题 | 较易(0.85) | 2021·全国高一课时练习
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3 . 已知角eqIdc13953f2514e4c8f9c8aaaf5241c33ac的终边上的点eqId451a2d6f08494d60aa3d452d4b6e03fd满足eqId2ee6cccbac5b414891da0bb960bd99be,则eqId4b944ce98aa844e7b4f35d06089c883a的值为_________
多选题 | 较易(0.85) | 2021·全国高一课时练习
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4 . 若角eqIdc13953f2514e4c8f9c8aaaf5241c33ac的终边上有一点eqIdeb9cb96fc5764f7e8f44f6ef8745883e,且eqId46b10b7e37834a09a3128357e17a2688,则a的值为(   )
A.eqId62f2412997424b4ca41272f35d432557B.eqIda2a0ce3781fa4c26b624f5966b7dee44C.eqIdc708da4537ca4254babadb80446df67dD.eqIdc152166b17984b9aa3597990c9cddda3
单选题 | 容易(0.94) | 2021·全国高一课时练习
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5 . 如图,过原点的直线与单位圆交于eqIdfcf606636c8549158e75f6db78c50096两点,其中P点在角eqId022e530e1dd6453ab54467745e9df0a8的终边上,则P点的横坐标是(   )
说明: figure
A.eqId49b7b111d23b44a9990c2312dc3b7ed9B.eqIdfcc58431683b452ca65d1d9977a280bdC.eqIde4d58f42bad9461b93d451da718fc6f4D.eqId232536b8bbed4f619f81f098fe3ebb9c
解答题 | 容易(0.94) | 2021·全国高一课时练习
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6 . 已知点M是单位圆上的点,以射线eqIdb948d8e112cd4a0f996872a13421359b为终边的角eqIdc13953f2514e4c8f9c8aaaf5241c33ac的正弦值为eqId931b4450daa44be49a34a7cce2a21182,求eqIdb8dffd3595704fd791dd6b613ceaea07的值.
单选题 | 容易(0.94) | 2021·全国高一课时练习
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7 . 点eqId9fe41ad6bf22416ea0f4b7ec51d69b4aeqId55cab1abf1fb4ea1891dabe08609acf6角终边与单位圆的交点,则eqIdc180d4d5cd20420e8319cd8a11d56c96的值为(   )
A.eqIda2a0ce3781fa4c26b624f5966b7dee44B.eqIde6ea793b6b434e32a8ab09f8697c35e1C.eqIdbf4d8b310ca74c22a7eb63a406f4674aD.eqId0538e70434fa4b4890d2172bbf2e1041
双空题 | 较易(0.85) | 2021·全国高一课时练习
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8 . 已知角eqIdc13953f2514e4c8f9c8aaaf5241c33ac的终边上一点坐标为eqId3d542a9904df4ffb96400352308cecbd,且eqIdc13953f2514e4c8f9c8aaaf5241c33ac为第二象限角,eqIdf0fd51386de543fab516c9c7148dc496,则eqIda87ed0bb112445baa2e1e753d0898196_________eqIde3adf51f42674398b03c2c6ac32a57f8________
填空题 | 较易(0.85) | 2021·全国高一课时练习
同步
9 . 若角eqIdc13953f2514e4c8f9c8aaaf5241c33ac的终边经过点eqId9e94db8097814e698b7123f0cf1246ef,则eqIda87ed0bb112445baa2e1e753d0898196_______eqId5f99ec0500e546efa94e9afc8cbc7021______eqIde3adf51f42674398b03c2c6ac32a57f8________
解答题 | 容易(0.94) | 2022·全国
10 . 已知角α的终边在直线y=-3x上,求10sin αeqId32aebae60abb45d899f24c5eb7cbba74的值.
更新:2021/09/18组卷:54