Can someone help me please

9514 1404 393

Step-by-step explanation:

There are two cases here. In one case, the focus has a non-zero x-coordinate, so the parabola opens left or right (depending on the sign). In the other case, the focus has a non-zero y-coordinate, so the parabola opens up or down (depending on the sign).

We can write the equations for each of the two cases.

For focus (a, 0), the equation can be written ...

  4ax = y^2

For focus (0, a), the equation can be written ...

  4ay = x^2

__

hope this !

step-by-step explanation:

d = distance between moon and sun, which in this problem is the hypotenuse of a right triangle.  

the distance y is the side opposite to angle x in the right triangle.   use the definition of the sine function from basic trigonometry.

sin(x) = y/d ⇒

d = y/sin(x)

irrational, cannot