Question

10 Alpha minus beta barabar sin square alpha minus sin square theta by cos square alpha minus cos square metre

Answer 1

Step-by-step explanation:

Given coordinates of four points in a plane, find if the four points form a square or not.

To check for square, we need to check for following.

a) All fours sides formed by points are the same.

b) The angle between any two sides is 90 degree. (This condition is required as Quadrilateral also has same sides.

c) Check both the diagonals have the same distance