If BD is a perpendicular bisector of AC. Find the length of the side AC.
3 cos θ
6 cot θ
3 sin θ
6 tan θ
ABCD is a parallelogram. What kind of quadrilateral is it if :(i) AC=BD and AC is perpendicular to BD ?(ii) AC is perpendicular to BD but is not equal to it ?(iii) AC=BD but AC is not perpendicular to BD ?