一、诱导公式(1)诱导公式五:$$ \sin ( \frac { \pi } { 2 } - \alpha ) = \underline { } \cos ( \frac { \pi } { 2 } - \alpha ) $$=___;(2)诱导公式六:$$ \sin ( \frac { \pi } { 2 } + \alpha ) = \_ \cos ( \frac { \pi } { 2 } + \alpha ) ...
( \frac { \pi } { 2 } + a ) = \sin \left[ \frac { \pi } { 2 } - ( - a ) \right] = \cos ( - a ) = \cos a $$ $$ \cos ( \frac { \pi } { 2 } + a ) = \cos \left[ \frac { \pi } { 2 } - ( - a ) \right] = \sin ( - a ) = ...
【题目】诱导公式五:$$ \sin ( \frac { \pi } { 2 } - \alpha ) = \_ , $$$ \cos ( \frac { \pi } { 2 } - \alpha ) = \_ , \tan ( \frac { \pi } { 2 } - \alpha ) = \_ . $$诱导公式六:$$ \sin ( \frac { \pi } { 2 } + \alpha ) = \_ ,...
2. 诱导公式一~四:(1)公式一:$$ \sin ( \alpha + 2 k \pi ) = \sin \alpha \cos ( \alpha + 2 k \pi ) = $$cos α,$$ \tan ( \alpha + 2 k \pi ) = \tan \alpha $$ ,其中$$ k \in Z $$.(2)公式二:$$ \sin ( - \alpha ) = \_ \sin \alpha , \cos...
3.(1)诱导公式五:$$ \sin ( \frac { \pi } { 2 } - \alpha ) = \cos \alpha ; $$$ \cos ( \frac { \pi } { 2 } - \alpha ) = \sin \alpha . $$(2)诱导公式六:$$ \sin ( \alpha + \frac { \pi } { 2 } ) = \cos \alpha $$$ \cos ( \alpha + \f...
2.诱导公式公式一:(其中$$ k \in Z ) $$$ \sin ( 2 k \pi + \alpha ) = \sin \alpha , \cos ( 2 k \pi + \alpha ) = \cos \alpha , $$$ \tan ( 2 k \pi + \alpha ) = \tan \alpha . $$公式二:$$ \sin ( - \alpha ) = \_ \sin \alpha , \cos (...
【题目】诱导公式$$ \sin ( \alpha + 2 k \pi ) = \textcircled { 1 } $$揭示了终边相同的两个角的公式$$ \cos ( \alpha + 2 k \pi ) = \textcircled { 2 } \_ k \in Z $$同一三角函数值的关系$$ \tan ( \alpha + 2 k \pi ) = \textcircled { 3 } \_ \_ \_ $$...
1.诱导公式(函数名称不变)(1)公式一:$$ \sin ( 2 k \pi + \alpha ) = \sin \alpha , \cos ( 2 k \pi + \alpha ) = \cos \alpha , k \in Z . $$(2)公式二:$$ \sin ( \pi + \alpha ) = - \sin \alpha , \cos ( \pi + \alpha ) = - \cos \alpha \cdot $$...
1.请说一下诱导公式一和诱导公式二诱导公式一:$$ : \sin ( \alpha + k \cdot 2 \pi ) = \_ , \cos ( \alpha + k \cdot $$$ 2 \pi ) = \_ , \tan ( \alpha + k \cdot 2 \pi ) = \_ , $$,其中$$ k \in Z . $$诱导公式二:$$ \sin ( \pi + \alpha ) = \cos...
百度试题 结果1 题目1.诱导公式五$$ \sin ( \frac { \pi } { 2 } - \alpha ) = \_ . $$$ \cos ( \frac { \pi } { 2 } - \alpha ) = \_ . $$ 相关知识点: 试题来源: 解析 1. cos a sin α 反馈 收藏