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> （理）设点 P( t 2 + 2 t ，1)(t≠0)是角α终边上一点，当 | OP |最小时，sinα-cosα的值是（　　） A．- 5 5 B． 3 5 5 C． 5 5 或- 3 5 5 D．- 5 5 或 3 5 5

问题：

发布时间：2024-09-13

（理）设点 P(

t

2

+

2

t

，1)(t≠0)是角α终边上一点，当 |

OP

|最小时，sinα-cosα的值是（　　）

A．-

5

5

B．

3

5

5

C．

5

5

或-

3

5

5

D．-

5

5

或

3

5

5

参考答案：

提问用户：KL***sxA

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（理）设点 P( t 2 + 2 t ，1)(t≠0)是角α终边上一点，当 | OP |最小时，sinα-cosα的值是（ ） A．- 5 5 B． 3 5 5 C． 5 5 或- 3 5 5 D．- 5 5 或 3 5 5

可能感兴趣的题目：

（理）设点 P(

t

2

+

2

t

，1)(t≠0)是角α终边上一点，当 |

OP

|最小时，sinα-cosα的值是（　　）

A．-

5

5

B．

3

5

5

C．

5

5

或-

3

5

5

D．-

5

5

或

3

5

5