Let p be the point on the ellipse x ^ 2 / 100 + y ^ 2 / 64 = 1, let F1 and F2 be the two focal points of the ellipse, and if the angle f1pf2 = 60 °, calculate the area of △ pf1f2

All the problems related to the focus triangle are combined with 1) sine cosine theorem. 2) definition of ellipse definition ? Pf1 ? + | PF2 | PF2 ? PF2 | PF2 | Pf1 | (2) definition of ellipse definition | Pf1 | (Pf1 ? + | PF2 | PF2 | PF2 | = = 2A cosine theorem: 36 = = | Pf1 | | | Pf1 ? Pf1 Pf1

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