Question

In parallelogram ABCD,AB^4+AD^2+AB^2*AD^2=AC^2*BD^2.If angle ABC=x,find the product of all possible values of x.Please tell me the answer.This is my homework pls

Answer 1

Answer:

tdlfjyfoydoydlhdkgsihwkhwkshkhskhskudlldhjlduflu