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geom/trig

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Using scissors to cut a rectangular piece of paper from one corner ro the opposite corner. The cut is 36 cm long and makes a 34 degree angle to the uncut edge. How many cm long is the paper (from the corner where he started the cut?

  • geom/trig -

    sin34 = y/36
    y = 36sin34 = appr 20.13

    cos34 = x/36
    x = 36cos34 = appr. 29.85

    the paper was 20.13 cm by 29.85 cm

    check:
    20.13^2 + 29.85^2 = 1296.23
    36^2 = 1296 , good enough using 2 decimals

  • geom/trig -

    Find the distance of the point p(6,-6) from the origin.

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