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16 March, 12:35

If tan (theta) = 1.5 and theta is in quadrant 3, what is

sin (theta) ?

+5
Answers (1)
  1. 16 March, 13:27
    0
    Tan (theta) = 1.5

    = 15/10

    =3/2 = P/B

    H^2 = P^2 + B^2

    = 3^2 + 2^2

    = 9 + 4

    H^2 = 13

    H = √13

    Sin (theta) = P/H

    = 3/√13

    As it is in 3rd quadrant,

    Sin (theta) = - 3/√13
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