有兩邊一角可以求出第一個三角形面積
sin41.5 * 28.2 * 18.8/2
有了面積,求等面積等邊三角形邊長
無解...確定不是正三角形?
two sides of a triangle have lengths 28.2cm and 18.8cm,the angle between them is 41.5,find the len
two sides of a triangle have lengths 28.2cm and 18.8cm,the angle between them is 41.5,find the len
two sides of a triangle have lengths 28.2cm and 18.8cm,the angle between them is 41.5,find the lengths of the sides of an isosceles triangle with the same area,
two sides of a triangle have lengths 28.2cm and 18.8cm,the angle between them is 41.5,find the lengths of the sides of an isosceles triangle with the same area,
英語人氣：959 ℃時間：2019-10-18 02:20:06
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