A square of side lies above the
axis and has one vertex at the origin. The side passing through the origin makes an angle
with the positive direction of
axis. The equation of its diagonal not passing through the origin is
As we learnt in
Two – point form of a straight line -
- wherein
The lines passes through and
Slope of a line -
If is the angle at which a straight line is inclined to a positive direction of x-axis, then the slope is defined by
.
- wherein
Equation of diagonal AB is
Option 1)
Incorrect
Option 2)
Incorrect
Option 3)
Correct
Option 4)
Incorrect
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