(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.

(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.

题型:解答题难度:简单来源:不详
(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

举一反三
,则(   )
A.B.C.D.

题型:不详难度:| 查看答案
______________.
题型:不详难度:| 查看答案
已知,则=         
题型:填空题难度:简单| 查看答案
函数在[]上的最小值是1,则的值为(    )
A.0B.C.D.

题型:不详难度:| 查看答案
已知,则等于
A.B.C.D.

题型:单选题难度:简单| 查看答案
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