Current location - Training Enrollment Network - Mathematics courses - 20 10 the second question of the standard volume 23 (polar coordinate) of the college entrance examination mathematics curriculum helps to have a look.
20 10 the second question of the standard volume 23 (polar coordinate) of the college entrance examination mathematics curriculum helps to have a look.
Point A is on C 1, and let the coordinate of A be (x, y).
C 1 through the fixed point P (1, 0)
Solve equation x (1-x) = y 2 (Pythagorean theorem) and equation xsina-ycosa-sina=0,