Which of the following equations is of a parabola with a vertex at (2,-3)? y=(x-3)^2 + 2
y= ( x - 2)^2-3
y=(x + 2)^2 + 3
y=( x + 3) ^2 - 2

Step-by-step explanation:

you would use (d.) the law of cosines or a^2 = b^2 + c^2 – 2bc(cos a)

, b^2 = a^2 + c^2 – 2ac(cos b), or c^2 = a^2 + b^2 - 2ab(cos c). you wouldn't use b. the law of sines as it is mostly effective when 1side and 2angles are given. a and c aren't the answer for they are the improper versions of the law of cosines. hope this is .