subject
Mathematics, 30.05.2020 01:57 genyjoannerubiera

Using the identity
2
θ
+
2
θ
=
1
sin
2
θ+cos
2
θ=1, find the value of
cos

θ
cosθ, to the nearest hundredth, if
sin

θ
=

0.31
sinθ=−0.31 and
π
<
θ
<
3
π
2
π<θ<
2


.

ansver
Answers: 2

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Using the identity
2
θ
+
2
θ
=
1
sin
2
...
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