In any right triangle with an altitude falls on the hypotenuse, all of the triangle that are formed are similar/proportional (Refer to geometric means theorem). This means, for number 5, we got the CB, u can now use pythagorean to solve the x (pasensya malikot mouse hehe)
Ni decode ko kasi paps back to school palang ulit ako ngayon , tinitignan ko kung ma gets ko formula sa ginawa mo kaso di ko alam kung paano lumabas yung 5 at 3