雙曲線16x^2-9y^2=144左、右焦點分別為F1F2,點P在雙曲線上且∠F1PF2=60°,求△F1PF2面積

雙曲線16x^2-9y^2=144左、右焦點分別為F1F2,點P在雙曲線上且∠F1PF2=60°,求△F1PF2面積

c^2=a^2+b^2=25所以F1(-5,0),F2(5,0)設P(Xp,Yp)Yp/(Xp-5)=[tan60+Yp/(Xp+5)]/[1-tan60*Yp/(Xp+5)]整理得:Xp^2+(Yp-5/√3)^2=100/3所以|Yp|=16√3/5或者Yp/(Xp+5)=[tan60+Yp/(Xp-5)]/[1-tan60*Yp/(Xp-5)]整理得:…