cant understand this solution in certain points..
on a circle with radius 1 there are two points one is static the other is
distributed evenly on the circle (i dont know the proper english term)
we sign X to be the hypotenuse on the circle
find the density function of the variable X
solution(i partialy understood it)the questions come after the photo
they say that we take x to be an angle from o til pi/2
we scan only the northern hemisphere because its symmetric.
what is the curv graph represents
what is t?
what is the meaning of y<=t?
why if they say that x should go from o til pi/2?
in the probability function they put x fro 0 till arcsin t/2 where t goes from
after this step they did the derivative to find the density function
i understand that step