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Trigonometry Examples
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Trigonometry
Verify the Identity sin(x)^2=sin(x)^2
sin
2
(
x
)
=
sin
2
(
x
)
sin
2
(
x
)
=
sin
2
(
x
)
Step 1
Start on the left side.
sin
2
(
x
)
sin
2
(
x
)
Step 2
Because the two sides have been shown to be
equivalent
, the
equation
is an
identity
.
sin
2
(
x
)
=
sin
2
(
x
)
sin
2
(
x
)
=
sin
2
(
x
)
is an
identity
⎡
⎢
⎣
x
2
1
2
√
π
∫
x
d
x
⎤
⎥
⎦
[
x
2
1
2
π
∫
x
d
x
]
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