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(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...

(本小题满分13分) 已知函数6ec8aac122bd4f6e.

(1)若6ec8aac122bd4f6e,且6ec8aac122bd4f6e为第一象限角,求y的值;

(2)若6ec8aac122bd4f6e,求y的值.

 

【解析】 (1) x为第一象限角,  ∴ ,代入函数·············································································· 3分 ···································································· 6分 (2) ········································ 10分 ∵      ∴ ························································ 13分 【解析】略
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