The answer is 6,072,825,688
Incorrect
if we solve x
we divide both side by 8 at 8x=56
therefore X=7
The composition of two rotations about the same point (Z) is the sum of the rotations. This can be proved using the matrix versions of the rotations.
This means
where
R=rotation operator
z=centre of rotation
t1,t2 are angles of rotation
In this particular case, the composition is commutative, i.e. order does not matter because addition of the angles is also commutative.
Thus substituting values, t1=170, t2=100
So the result of the composition is a rotation of 270 degrees about Z from the original position, which is also equal to a rotation of -90 degrees.