Which congruence theorem can be used to prove triangle ABC is congruent to triangle DEC

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.

Drag each equation to the correct location on the table. for each equation, determine the number of solutions and place on the appropriate field in the table.

Use the given information to determine the exact trigonometric value.