anonymous
  • anonymous
Area of trapezoid
Mathematics
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anonymous
  • anonymous
Area of trapezoid
Mathematics
chestercat
  • chestercat
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
anonymous
  • anonymous
I know the answer is D
anonymous
  • anonymous
Its something with 45 30 90 or something that one angle on the left

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saifoo.khan
  • saifoo.khan
\[\frac12\times base \times \text{(s um of p arallel sides)}\]
anonymous
  • anonymous
you use the 1/2h (b1+b2)
saifoo.khan
  • saifoo.khan
Yes.
saifoo.khan
  • saifoo.khan
But we have to find the value of the line adjacent with 45*/
anonymous
  • anonymous
Yeah how its something with 45 30 90 or something my teacher said i forgot
saifoo.khan
  • saifoo.khan
Use tan ratio to find it.
saifoo.khan
  • saifoo.khan
\[\tan \theta = \frac{opp}{adj}\] \[\tan 45 = \frac{7}{adj}\] \[adj = 7\]|dw:1330659614940:dw|
saifoo.khan
  • saifoo.khan
Now you have all the values, \[\frac12 * 7 * (8+8+3+7)\]Solve.:)
anonymous
  • anonymous
ohh its 7 why do you use tan?
saifoo.khan
  • saifoo.khan
Because we have to choose either one of the three ratios.. If you feel confusion, try writing the 2 other ratios as well.. And try applying them. Later you will find that u can't use those here.
anonymous
  • anonymous
oh alright thanks, got a big test tomorrow!
saifoo.khan
  • saifoo.khan
Best of luck. Believe me, i too used to get confused b/w which one to use.. then i found a shortcut. ;)

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