ABC is a triangle inscribed in the circle z = r whre z is a complex no. and r is the radius of the circle. the internal bisector of angle A and the altitude from A on BC meet the circle at D and E respectively. F is the foot of the perpendiclr from A on BC. let Z1 , Z2 , Z3 represent the vertices A,B and C respectively.
then:
1.the point D is representd by......
2. the point E is representd by......
3. the orthocentr is representd by.....
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