如题所述
è½ç»æå ·ä½è§åº¦ä¹
2*0.12161902326135=0.2432è§åº¦=弧度é¤ä»¥Ïåä¹ä»¥180
帮我算下吧
sin(x ∕ 2)﹦(11 ∕ 2) ∕ 45﹦0.1222