Find the equation of the parabola with its focus at (-7,6) and its directrix at y = 4 OA) y-/a(x + 7)2 + 5
O B) y-/Ax+ 7)2 + 5
Ooy-/ax- 72 +5
OD) y- 1/4lx+ 5)2+7

Your choices of answers are confusing , but It looks like A is a good fit

Step-by-step explanation:

+ 14x +54  ( from drawing )   [ leave the web address for the graphing webpage so you can use it to check answers]

complete the square on the above expression

+14x + + 54 - 49   ( b/c we added 49 to complete square)

(x+7)^2 + 5

So this looks a bit like answer A

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.