What is the Pythagorean Theorem used to find and what must you have to use it? a. magnitude, fight triangle
b. direction, right triangle
c. magnitude, parallelogram
d. direction, parallelogram

a and b sometimes have a positive value

i think the answer would be b

c. newton's third law of motion

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.