Answer:
Step-by-step explanation:
Hypotenuse = 25
Opposite=20
Adjacent =?
Use Pythagoras Theorem :
[tex] {hypotenuse}^{2} = {opposite}^{2} + {adjacent}^{2} [/tex]
Input values
[tex] {25}^{2} = {20}^{2} + {x}^{2} \\ 625 = 400 + {x}^{2} \\ 625 - 400 = {x}^{2} \\ 225 = {x}^{2} [/tex]
Square root both sides
[tex] \sqrt{225} = \sqrt{ {x}^{2} } \\ 15 = x \\ x = 15[/tex]
