Q. Vector AB has a terminal point (7,−9), an x component of 13 , and a y component of −5 .Find the coordinates of the initial point, A.A=(□,□)
Define vector AB: The vector AB is defined by its terminal point B and its components. The x component of AB is the difference in the x-coordinates of point B and point A. We are given that the x component is 13, so we can write the equation for the x-coordinate of point A as Ax=Bx−13.
Calculate x-coordinate of point A: Given the terminal point B has an x-coordinate of 7, we can substitute this into the equation to find Ax: Ax=7−13=−6.
Calculate y-coordinate of point A: Similarly, the y component of AB is the difference in the y-coordinates of point B and point A. We are given that the y component is −5, so we can write the equation for the y-coordinate of point A as Ay=By−(−5) or Ay=By+5.
Combine x and y coordinates of point A: Given the terminal point B has a y-coordinate of −9, we can substitute this into the equation to find Ay: Ay=−9+5=−4.
Combine x and y coordinates of point A: Given the terminal point B has a y-coordinate of −9, we can substitute this into the equation to find Ay: Ay=−9+5=−4. Combining the x and y coordinates of point A, we get y1.
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