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If tan theta = a/b, then find sin 2 thet...

If `tan theta = a/b`, then find `sin 2 theta, cos 2 theta, "and" tan 2 theta`.

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Knowledge Check

  • If a tan theta = b, then a cos 2 theta+ b sin 2 theta =

    A
    a
    B
    b
    C
    `-a`
    D
    `-b`

  • If tan theta = b//a , then b cos 2 theta + a sin 2 theta =

    A
    a
    B
    b
    C
    `b//a`
    D
    none

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