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31 March, 11:06

The angle 0 is located in quadrent 4 and cos (0) = 9/19. what is the value of sin (0)

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  1. 31 March, 14:22
    0
    sin (0) = (-2 sqrt of 70) / 19

    Explanation:

    Cos = adjacent / hypotenuse

    Sin = opposite / hypotenuse

    so, using the pythagorean theorem (a^2 + b^2 = c^2

    opp^2 = adj^2 - hyp^2

    opp^2 = 9^2 - 19^2

    opp^2 = 81 - 361

    opp = sqrt of - 280

    sqrt of 280 can be rewritten as - 2 sqrt 70

    So, opp = - 2 sqrt 70

    Sin = opp / hyp

    Sin = (-2 sqrt 70) / (19)
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