Calc

When pi/2<theta<3pi/4, which of the following could possibly be tan theta.

a. -8
b. -1/8
c. 0
d. 1/8
e. 8

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asked by Leanna
  1. in the second quadrant, tan is negative, and in the third quadrant, tan is positive. What is tan PI?

  2. a. -8

    If you look at a graph of y = tan theta, you will see why.

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    posted by Max
  3. Table:

    Theta......tan theta
    ....0...............0.......
    ..pi/4.............1.......
    ->pi/2-......->+inf...
    ->pi/2+......->-inf....
    .3pi/4............-1......
    ....pi...............0......

    And so on.

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    posted by Max
  4. Max is right, I read 3/4 PI as 270 degrees, which it is not.
    http://intmstat.com/trigonometric-graphs/cotx.gif

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