Answer :
The length of BC in the right triangle is 75.
What is Pythagoras Theorem ?
According to the Pythagoras Theorem , in a right angled triangle , the sum of base square and height square is equal to hypotenuse square.
in right angled triangle ABC ,length of BC has to be determined
Given is AB = 21 ,
AC = 72
therefore according to the Pythagoras theorem
BC² = 21² +72²
BC² = 441 +5184
BC²= 5625
BC = 75
the length of BC in the right triangle is 75.
To know more about Pythagoras Theorem
https://brainly.com/question/343682
#SPJ2
