Find the area of a triangle with sides of 66.9 and 78.9 centimeters,and the included angle of 37.9
问题描述：
Find the area of a triangle with sides of 66.9 and 78.9 centimeters,and the included angle of 37.9
答
有三角形面积公式，二分之一的两边积乘以夹角Sin值
答
求三角形得面积，已知其中2条边厂66.9CM，78.9CM。其夹角为37.9度。
答
求两边分别为66.9和78.9cm,且夹角为37.9°的三角形面积
S=absinC/2=1621.22平方厘米（square centimetres）
答
想干嘛？