If cos theta = 2x/1+x2 find the value of sin theta and tan theta in the form of x
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ANSWER
cosθ=
1+x
2
2x
sinθ=
1−cos
2
θ
=
(1+x
2
)
2
(1+x
2
)
2
−4x
2
=
1+x
2
1−x
2
cotθ=
tanθ
1
=
sinθ
cosθ
=
1−x
2
2x
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