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8 May, 20:31

A right triangle has the following. AB=20, AC=99, CB=101. sin B=?, cos B=?, tan B=? reduce your answers as fractions if possible

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  1. 8 May, 20:53
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    The editor is doing strange things. I have to start over.

    Are we working with a right triangle?

    Use a^2 + b^2 = c^2 to find out. The right angle is opposite
    b = 99

    c = 20

    a = 101

    99^2 + 20^2 = 101^2

    9801 + 400 = 10201 but 101^2 = 10201 so we are working with a right angle triangle.

    Find the trig functions.

    Sin (B) = opposite / hypotenuse = AC/BC = 99/101

    Cos (B) = adjacent / hypotenuse = AB / BC = 20/101

    Tan (B) = opposite / adjacent = AC/AB = 99/20

    If these are not your answers, try putting in the decimal form

    Sin (B) = 0.9802

    Cos (B) = 0.1980

    Tan (B) = 4.95
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