express cos60-cos20 in the from of a produt
if each term of a G.P is raised to the power x ,show that the resulting sequence is also a G.P.
For what point of the parabola y2=16x is the ordinate twice the abscissa?
For what point of the parabola y2=16x is the ordinate twice the abscissa?
For what point of the parabola y2=16x is the ordinate twice the abscissa?
a bag contain 3 white ball& 2 black ball . find probability of drawing a white ball at random