anonymous
  • anonymous
how to find the exact value of tan π/2 − sin 3π/2?
Mathematics
katieb
  • katieb
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Owlfred
  • Owlfred
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anonymous
  • anonymous
-0.054731569
anonymous
  • anonymous
http://www.intmath.com/trigonometric-graphs/4-graphs-tangent-cotangent-secant-cosecant.php tan (pi/2) = undefined.... so, you have no definite answer for this problem

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anonymous
  • anonymous
yeah, that can be
anonymous
  • anonymous
EXACT answer is not the decimal above.
anonymous
  • anonymous
i got the mistake.
anonymous
  • anonymous
yeah i know. i plugged in the wrong one.
anonymous
  • anonymous
tan pi/2 is undefined, so there is not an answer. is this typed incorrectly? should it be pi/4 ?
anonymous
  • anonymous
0-0=0
anonymous
  • anonymous
it's right the teacher made it up. I'm recently learning trig.
anonymous
  • anonymous
undefined - (-1) = undefined :) don't you think
anonymous
  • anonymous
Actually 0-(-1)=1
anonymous
  • anonymous
Don't look at the graph which is undefined, but exact answer create a triangle: the tan is 0
anonymous
  • anonymous
ye4ah you are right.
anonymous
  • anonymous
No, I take my answer back I was reading it sideways 1/0 is not zero. Undefined

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