题目内容
(本小题满分13分) 已知函数.
(1)若,且为第一象限角,求y的值;
(2)若,求y的值.
【答案】
解:(1) x为第一象限角,
∴ ,代入函数·············································································· 3分
···································································· 6分
(2) ········································ 10分
∵ ∴ ························································ 13分
【解析】略
练习册系列答案
相关题目