Step-by-step explanation:
Opposite angles in a cyclic quadrilateral are supplementary.
Therefore 3c = 4d = 180°, c = 60° and d = 45°.
We need to use the calculator, using the tan⁻¹ function:

Using the calculator:

To the nearest tenth:
None... the points are scattered...
Answer:
4,-6
Step-by-step explanation:
the triangle moves 4 units to the right and 6 units below