gopeder
OK I have two problems I'm stuck on can someone plz help me out and plz teach me how you solved it
If b = 12, find c.
If b = 3, find a.
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gopeder
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its a triangle btw
benice
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feels like the question is missing something
gopeder
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the Picture but i don't think you need it
benice
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yes you need the pic ....its tells you the angles which tells the ratios of the sides to on another
benice
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have you learned SOHCAHTOA?
(theta\[\sin \Theta=opp/hyp \]
\[\cos \Theta=adj/hyp\]
\[\tan \theta=opp/adj\]
benice
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|dw:1332188561682:dw|
benice
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|dw:1332188855143:dw|
benice
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for question a we know the adj and angle 60 degrees and we want to know hyp
SohCahToa
so we Cah
\[Cos \theta=adj/hyp\]
benice
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here adj = 12 , hyp = c and cos(60)
benice
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i'd rather not tell you the answer but will help
aroub
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OR did you take that:
In semi equilateral triangle:
The hypotenuse = 2 ( shorter leg)
and the longer leg = square root of 3 times the shorter leg ??
* I think it's easier to use it in this problem.
gopeder
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Kinda confused So we are just talking about the first one correct? haha im trying to put it all together in my head..
benice
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ok yes we talking about the first one
benice
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|dw:1332189439391:dw|
gopeder
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ok that kinda makes more understand able and clear
benice
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can you work out c now?
gopeder
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hmm SOH stands for Sine equals Opposite over Hypotenuse. B is the opposite side and C is the hypotenuse
gopeder
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so its 12 over x 12 being B and x being C?
benice
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|dw:1332189795874:dw|
benice
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your getting the idea which is good ... you just mixed up the sides
gopeder
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cant read what B is But on the diagram its the opposite side
benice
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in the question 1
you said b =12 find c|dw:1332190095344:dw|
gopeder
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Ugh im still confused what do I need to do to go about doing to find C? i thought I had to 12 over x
benice
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cos (60)=12/x
benice
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yes you right ... my bad
you could also use
|dw:1332190384723:dw|
benice
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now can you draw in the opp , the adj and hyp
gopeder
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Oh my god im confused :/ X can't = 6
benice
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sin=opp/hyp
sin 30 = 12/x
1/2=12/x
.5x=12
x=24
.. sry your right i got it wrong
gopeder
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Oh ok!! haha I thought it was 24 then you said 6 and i was TRIPPING out lmafo
gopeder
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Ok for the second part im going to try that one can you check my answer? :)
benice
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glad you get it ...
certainly best of luck
gopeder
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in this case its 3/x right?
gopeder
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"TOA stands for Tangent equals Opposite over Adjacent."
gopeder
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No that cant be right
gopeder
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Trigonometry in geometry lol YEA!!! anyways the answer is 6.. found out after a lot of research on how do solve this problem @benice
gopeder
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btw that was a Female dog to do.....lol
benice
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congrats the answer is correct