two fair coins were tossed and it is known that at least one was a head. Find the probobility they were both heads
The line 2x-3y-4=0 is the perpendicular bisector of the line AB and coordinates of Aare (-3,1). Find the coordinates of B .
Find the angle between X -asis and the line joining the points (3,-1) and (4,2)
Find the angle between X -asis and the line joining the points (3,-1) and (4,2)