赞 dandanwuqi 幼苗
共回答了12个问题采纳率：91.7% 举报
sinA=1/2,
∠A = 30
tanB=（根号3）/3,
∠B = 30
∠C = 180-∠A-∠B = 180-30-30 = 120
∠A = 30
tanB=（根号3）/3,
∠B = 30
∠C = 180-∠A-∠B = 180-30-30 = 120
1年前 追问
7
三角函数是与角的度数相关，与角在三角形还是别处无关，当然也与三角形是否是直角无关。
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