Question

If tanθ=13√tanθ=13 , then the value of cos2θ=
1)
$\sqrt{ \frac{3}{2} }$
2)
$1$
3)
$\frac{1}{2}$
4)
$\frac{2}{ \ \sqrt{3} }$
​

Answer 1

Answer:

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Step-by-step explanation:

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