在圆锥曲线中经常会遇到求三角形面积的问题,其方法较多.如:关于焦点三角形,可用圆锥曲线的定义、正弦定理和余弦定理求面积;与弦长相关的三角形可用三角形面积公式,其中还要用到弦长公式和点到直线的距离公式.在解答客观题时,用这些方法所需时间相对较长,我们可以考虑用分割法来求三角形的面积.分割法求面积,就是在平面直角坐标系中,将三角 In the conic curve often encounter the problem of seeking the area of ​​the triangle, the method is more.For example: about the focus triangle, the conic curve can be used to define the sine and cosine theorem for the area; and the chord associated with the triangular triangle area formula, Which also use the chord length formula and the distance from the point to the formula in the objective questions to answer, the time required for these methods is relatively long, we can consider the use of segmentation method to find the area of ​​the triangle. In Plane Cartesian, place the triangle