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Mathematics
Mathematics
Problem
Explain why dividing the identity
sin
2
x
+
cos
2
x
=
1
\sin^2 x+\cos^2 x=1
sin
2
x
+
cos
2
x
=
1
by
sin
2
x
\sin^2 x
sin
2
x
is not permissible for angles
x
=
n
π
x=n\pi
x
=
nπ
, where
n
∈
Z
n\in\mathbb Z
n
∈
Z
.
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