Vector points true north and has magnitude 7 units. vector points 30° east of true north. what
should the magnitude of be so that − points directly east?
a. state the magnitude and direction of −
b. write − in magnitude and direction form

It's like discovering the answer to a puzzle. the purpose in solving an equation is to find the value or values of the variable that makes it a true statement. any value of the variable that makes the equation true is called a solution to the equation.