sin(90-Y)=1.33*sinY
X+Y=90
求X跟Y
2006-11-06 05:38:04 · 1 個解答 · 發問者 ? 2 in 電腦與網際網路 ➔ 程式設計
sin(90-Y)=1.33*sinY → cosY=1.33*sinY → cosY/sinY=1.33 → cotY=1.33 → tanY=1/1.33=0.7519Y=tan-10.7519≒37度X=90-Y≒53度
2006-11-06 10:59:58 補充:
三角函數表,請參考:http://tw.knowledge.yahoo.com/question/?qid=1305091716169
2006-11-06 05:58:18 · answer #1 · answered by ~~初學者六級~~ 7 · 0⤊ 0⤋