第一章 三角函数
1.2.2 同角三角函数的基本关系
一、选择题:在每小题给出的四个选项中,只有一项是符合题目要求的.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc517f1a2fc3592714482bd726c82795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 正、余弦齐次式的计算解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18accc4e6cef56e08221d62ad5fddaab.png)
A.![]() | B.![]() | C.4 | D.5 |
【知识点】 三角函数的化简、求值——同角三角函数基本关系解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e70e388af6a9fb1cb4ca416c608d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e177995c10f04254524e3befedb8fcb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 三角函数的化简、求值——同角三角函数基本关系解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/874bc8ac1ba02e54bcc5691478b28dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3d43f3e7109d1e4173ee4993c9a148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9fda54ff47019975ce122c93f93ac0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 正、余弦齐次式的计算解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bc052a11cf1a01445992672dde2836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 三角函数的化简、求值——同角三角函数基本关系解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/078714125ff27a773ded66638044f7b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323641a77c516a7100ce600e143ad0ba.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 已知弦(切)求切(弦)解读 正、余弦齐次式的计算解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5690ee204a079b55b847d5d4ebe735ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb66f4db41478c23128adc14f2796556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
A.![]() | B.3 | C.![]() | D.![]() ![]() |
【知识点】 已知弦(切)求切(弦)解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d663ddf286ed48a83aa17304d58c6442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b4cab645c97f6d1710f803ef6a8436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
A.![]() | B.![]() ![]() | C.![]() | D.![]() ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f102439ebd1efd422f04209ecec2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1094f742a346ffa18d58b99f45ec8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 三角函数的化简、求值——同角三角函数基本关系解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e52dd7097802e123385baac4f78f02c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec961bea95f9eae399e75c47a56180b7.png)
A.![]() | B.![]() | C.1 | D.3 |
【知识点】 正、余弦齐次式的计算解读
二.填空题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21246fc46a5e01dbc9791aa21d31a036.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb4dd3f7b5dbc53513e0d149941bd1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281805b9dfe2162215dfe6b5ad6d7b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338457322c0cde3896ce23a7e724acca.png)
【知识点】 sinα±cosα和sinα·cosα的关系解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1ef343ab281eea470b78d967e065ee.png)
三.解答题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8243953e45f9db416d64b444b259b02b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb30d31769b19989c8e02a757b9ee2a.png)
【知识点】 已知弦(切)求切(弦)解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d59142ab797807e560fe8adf63e6ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da1076e810e4a41097a34de6c3bd3623.png)
【知识点】 正、余弦齐次式的计算解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c23bd44e2d4b927140f0ddbcc30ca47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375bb65574118fa71884d186efdb32b1.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6639739f265f665dfd0c390bb8e1cd2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad8adfc8606bf1251d907219b6181f5.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/babf5eb8ec511c068576df2cbcf16875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1839ece4547b22b877d0054c20af9a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d32a888049a802480e939140a5e2e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7857a417d2b609496fe9aeed7f3384ff.png)