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If costheta=1/2 , find the value of (...

If `costheta=1/2` , find the value of `(2sectheta)/(1+tan^2theta)`

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Knowledge Check

  • If costheta=(1)/(2) , then value of tan2theta is

    A
    `sqrt3`
    B
    `(1)/(sqrt(3))`
    C
    `-sqrt(3)`
    D
    `-(1)/(sqrt(3))`