Mirandaregina
  • Mirandaregina
How do I go about answering this question? (Image attached)
Mathematics
jamiebookeater
  • jamiebookeater
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Mirandaregina
  • Mirandaregina
1 Attachment
Mirandaregina
  • Mirandaregina
The choices are A) 4.0 B) 4.2 C) 3.4 D) 3.8
triciaal
  • triciaal
|dw:1437422210485:dw|

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triciaal
  • triciaal
review sum of angles in a triangle = 180 tan of angle = opposite/ adjacent
triciaal
  • triciaal
|dw:1437422495739:dw|
anonymous
  • anonymous
\[\text{Solve}\left[\tan (42 {}^{\circ})=\frac{8 \tan (52 {}^{\circ})}{x+8}\right]\]\[x\to 3.37215 \]
triciaal
  • triciaal
|dw:1437422916376:dw|
triciaal
  • triciaal
|dw:1437423184887:dw|
Mirandaregina
  • Mirandaregina
@triciaal I got 3.37215
triciaal
  • triciaal
now round to 1 decimal place
triciaal
  • triciaal
look at the 2nd decimal if 5 or more add 1 to 1st decimal if less than 5 you drop
Mirandaregina
  • Mirandaregina
@triciaal 3.8, so the answer is D. Thank you for taking the time to explain this to me :) I appreciate it
Mirandaregina
  • Mirandaregina
@robtobey also, thank you for your input as well!
triciaal
  • triciaal
welcome

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