PYTHAGOREAN THEOREM

1
c
a
PYTHAGOREAN THEOREM
90
b
2
2
2
c a b
2
c
a
LAW OF COSINES
?
b
3
c
a
d
?
x
b - x
4
2 2 2 c
d (b - x)
2 2 2
2 a - x
b - 2bx x
2 2
a b - 2bx
c
a
d
?
x
b - x
2 2 2 d a -
x
5
c
a
d
?
x
b - x
6
c
a
LAW OF COSINES
?
b