anonymous
  • anonymous
Find the area of the triangle. Round the answer to the nearest tenth. A. 68.4 square units B. 75.3 square units C. 84.5 square units D. 136.7 square units
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
1 Attachment
geerky42
  • geerky42
Do you know trigonometry?
anonymous
  • anonymous
no

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anonymous
  • anonymous
not really
anonymous
  • anonymous
@geerky42 can you help me tho solve using trig thats the category im on
anonymous
  • anonymous
"Trigonometric Area Formulas"
geerky42
  • geerky42
So there are area formulas you can use? Can you tell me these formulas?
anonymous
  • anonymous
they arent any on this question thats what i need
geerky42
  • geerky42
Ok let's find height. |dw:1437442631416:dw| Do you know how? HINT: \(\sin\theta = \dfrac{\text{Opp}}{\text{Hyp}}\)
anonymous
  • anonymous
what does that symbol next to sin mean
UsukiDoll
  • UsukiDoll
theta
geerky42
  • geerky42
We have angle \(63^\text o\), so opposite side is h and hypotenuse side is 13.
geerky42
  • geerky42
Common way to denote angle.
anonymous
  • anonymous
now what
geerky42
  • geerky42
Well, plug in values and solve for \(h\).
anonymous
  • anonymous
um i got 4.8
geerky42
  • geerky42
How?
anonymous
  • anonymous
what do i plug in for H
geerky42
  • geerky42
Nothing. You are solving for h. \(\sin\theta = \dfrac{Opp}{Hyp}\) You are given that \(\theta = 63^\text o\) and \(Hyp = 13\) You are trying to find height aka opposite side.
anonymous
  • anonymous
ok now i got 11.4
anonymous
  • anonymous
sin(63)=h/13
geerky42
  • geerky42
Yep. Now you have height. However we need base. We have hypotenuse and opposite side, so we can use Pythagorean Theorem here to find adjacent side.
geerky42
  • geerky42
|dw:1437443448625:dw|
anonymous
  • anonymous
126?
anonymous
  • anonymous
A. Refer to the attachment.

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