4 times will take you to cross
Answer:
63 degrees
Step-by-step explanation:
Inside angles of a triangle always equal 180.
Add the 2 angles together 71 + 46 = 117
Subtract that from 180 180 - 117 = 63
The standard equation of parabola:
(y-k)²=4p(x-h), with:
a) vertex = (h,k)
b) focus = (h+p, k)
c) directrix = (x=h-p)
Since this parabola has a vertex at (0,0) that means h=k=0
Hence the equation becomes: y²=4px, let's calculate p:
focus is given (-9,0) Remember h+p = -9 & since h=0, then p= -9
===> y²= - 36x
