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Find sinθ and tanθ if cosθ = 2/5 and cotθ>0?

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  • ?
    Lv 7
    6 years ago
    Favorite Answer

    cosθ = 2/5 and cotθ > 0 => this is on 1st. quadrant.

    cosθ = 2/5 = adj./hyp. => opp.=√21

    sinθ = √21/5

    tanθ = √21/2

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