[中學] 三角函數座標
大概的圖
\ |
\ |
\ 53 |Ay
\ ︵|
\ |
\ |
______\|
Ax
想問的是
角度為53度
怎麼從圖看
Ax分量 = (cos143度) = -sin53度
Ay分量 = (sin143度) = cos53度
以圖來看
括號裡的兩個函數為什麼我會看反@@
sin會想成cos!!!
觀念哪裡錯了呢
感謝^^
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