1 . 如图所示,以
为始边作角
与
,它们的终边分别与单位圆相交于点
,
,已知点
的横坐标为
.
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99981be1c406b30b49185304864d9700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b5508dddaaea532f007b2ff5351a5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247666b781d4289ea1af61e103418a03.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7488416c7730fc97cdf2999bfc509959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fe57d4fbae536de2e641d9d349fcf1.png)
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2 . 在
中,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41de4d71f031a145ffee28a1c487baed.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854e68b995b672792bb915ef502fcd5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41de4d71f031a145ffee28a1c487baed.png)
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名校
解题方法
3 . 在
中,角
,
,
所对的边分别为
,
,
,已知
,
,
.
(1)求
的值;
(2)求
的值;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f317b022b06f638d7a5d08c8cdf43a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5204b80258bb8536bd73d0221e2e3243.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dcfa3e340b3976832d450dd4ae7e7a7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afaae441de0ffcd471bd58b16cd3fbd0.png)
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解题方法
4 . 已知
,
,其中
,
.
(1)求
的值;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2e2c779a79ea66d6d134b3f3e65003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03106022757d2899b6cf2c0455e263eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a6d589e032939e6135174eac55aa7ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3741c462a9186a80fcf1a3d7f6fa989c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b3adfb25816cf11f7760d868c29cb7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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解题方法
5 . 已知函数
的部分图象如图所示.
的解析式;
(2)求
的单调递增区间;
(3)若锐角
满足
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0ef9d537e1849ed448318247dce9f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(3)若锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba6ff07d9794cb287ad46e857b2669e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
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解题方法
6 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3015dfa8241ea34a5fe59ce4b64e4c4d.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3015dfa8241ea34a5fe59ce4b64e4c4d.png)
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7 . 已知函数
部分图象如图所示,下列说法不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7743895a7a1d924507c3b30e654f6743.png)
A.![]() ![]() |
B.![]() ![]() |
C.将函数![]() ![]() ![]() |
D.若方程![]() ![]() ![]() |
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解题方法
8 . 已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63e88d9ce4afb1766093727c466c577.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda318adf65c6b6fd45f651365f52346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84effab46d6bfc6cb110963e027a6b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2024f720b6d912e68fe6ab164852a6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63e88d9ce4afb1766093727c466c577.png)
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解题方法
9 . 已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df48c99dca918d5a03171eff39acbaee.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e4f558115c2751fde6d403387b42a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80eb51230a67c3ef2d2f49a60ac104a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e077c134951be8db27ee90e16b36fea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df48c99dca918d5a03171eff39acbaee.png)
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名校
解题方法
10 . 已知
,
是函数
的零点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c1f914da4657eca7865982b130b299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d75442a901f013aeb5c52a7113ae9b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c487295d441397ea078d433e61087cec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a91d7fa3be7708a277b8a836c5af89.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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