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> 设 a =(6cosx，- 3 )， b =(cosx，sin2x)， f(x)= a • b （1）求f（x）的最小正周期、最大值及f（x）取最大值时x的集合；（2）若锐角α满足 f(α)=3-2 3 ，求 tan 4 5 α的值．

问题：

发布时间：2024-09-11

设

a

=(6cosx，-

3

)，

b

=(cosx，sin2x)， f(x)=

a

•

b

（1）求f（x）的最小正周期、最大值及f（x）取最大值时x的集合；
（2）若锐角α满足 f(α)=3-2

3

，求 tan

4

5

α的值．

参考答案：

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设 a =(6cosx，- 3 )， b =(cosx，sin2x)， f(x)= a • b （1）求f（x）的最小正周期、最大值及f（x）取最大值时x的集合； （2）若锐角α满足 f(α)=3-2 3 ，求 tan 4 5 α的值．

可能感兴趣的题目：

设

a

=(6cosx，-

3

)，

b

=(cosx，sin2x)， f(x)=

a

•

b

（1）求f（x）的最小正周期、最大值及f（x）取最大值时x的集合；
（2）若锐角α满足 f(α)=3-2

3

，求 tan

4

5

α的值．