Question

If the telescope is 1 m deep and 8 m wide, how far is the focus from the vertex?

Answer 1

the telescope is a parabola
use the standard form
x^2 = 4ay where (0.a) is the focus
here
x^2 = 8x

so what is the value of a?

Answer 2

* x^2 = 8y

Answer 3

?

Answer 4

@Astrophysics

Answer 5

x^2 = 4ay
x^2 = 8y
therfore
4a = 8
and a = 2

the focus is 2 m from the vertex

Answer 6

do you follow that?

Answer 7

yes

Answer 8

good

Answer 9

be lucky!