Given data:
The given angle is θ=7π/4.
The given radius is r=1 unit.
The given angle can be written as,
θ=7π/4
=7(180°)/4
=315°
The expression for the x coordinate is,
x=1(cos315°)
=0.707 unit.
The expression for the y coordinate is,
y=1(sin315°)
=-0.707 unit
Thus, the coordinate of the point is (0.707, -0.707).
