Problem 62, do you use a formula to figure this out

second mirror gathers light from a faraway object and reflects it to another mirror. - a.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle