1. Questions

precalculus

Suppose that
θ
is an angle in standard position whose terminal side intersects the unit circle at
, 35/37−12/37
.

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Ange

  1. ok.

    It appears to be in QIV, and is a 12-35-37 right triangle.

    If you draw it correctly, you should be able just to read off the values of the trig functions of that angle.

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    Steve

  2. ok, I am supposing Ø to be as you stated, now what?

    did you notice that 35^2 + (-12)^2 = 37^2 ?
    Do you know the basic trig ratios in terms of the x, y, and r of the corresponding right-angled triangle?

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    Reiny

  4. no that why I ask

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    Ange

  5. what will sin , cot, csc be for that >

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    Ange

  6. sketch a right-angled triangle.
    label the horizontal base as x
    the vertical side as y
    the hypotenuse as r, and the base angle as Ø

    memorize these ratios:
    sinØ = y/r
    cosØ = x/r
    tanØ = y/x
    and now their reciprocals:
    cscØ = 1/sinØ = r/y
    secØ = 1/cosØ = r/x
    cotØ = 1/tanØ = x/y

    You will not be able to handle trig questions without knowing these.

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    Reiny

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