heather040200
HELP! Pic Below I GIVE MEDALS :)
find g,i and j
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heather040200
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can you help me?? @e.cociuba
heather040200
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thanks
heather040200
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do you no about g?
heather040200
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or j??
heather040200
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|dw:1365476931530:dw|
Eyad
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The first figure which contain angle g ,Is it a right angle ?
heather040200
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yes
Eyad
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it should be |dw:1365471862587:dw|
Anyway ,Since this is a right angle triangle then Use Sine, Cosine or Tangent .
Where Sin=opp/Hyp.
Cos=adj/hyp.
tan=opp/adj
You got it ?
heather040200
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yes i understand
Eyad
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Great,Can you deduce the value of g ?
heather040200
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would it be 10
Eyad
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How did you get that ?
heather040200
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idk lol would it be 20/10=2?
Eyad
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you are calculating the coefficient of g which is an angle
Since you were given the Opp and the hypo. ,Therefore you will use the sin
Sin(g)=10/20= ?
heather040200
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sin(q)=0.5
Eyad
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Nope, You need to get the angle
Sin^-1=10/20= ?
heather040200
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i don't understand
Eyad
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If Sin(a)=1
and you need to get the coefficient of a ,how To get a ?
Type on your calculator Shift+Sin+1 and the result will be the coefficient of a .
Can you follow the steps ?
heather040200
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ok igot 0.017
Eyad
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Ugh,No that;s wrong .
Check this
http://www.picalc.com
Type :
asin(10/20)= ?
heather040200
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soryy i got a pelletty caculater,,,i got 30
Eyad
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Thats the Right answer :'')
heather040200
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ok so g=30 lol
Eyad
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Yes *cry out of happiness*
heather040200
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Yay!lol so then is i=60?
Eyad
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i is an angle in another figure ! not this figure right ?
heather040200
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yup but its not a angle i drew it
Eyad
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In the other Triangle Do the same Steps (sin,cos,tan)
And notice that :
That median cut the line to two equal parts (The same length)
Eyad
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@ryan123345 :May you continue ,Because i want to drink something +_+ ...
ryan123345
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lol
Eyad
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ok ^ ?
ryan123345
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Well I rather explain it to her from the begining
heather040200
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so can u help me plezz! :)
Eyad
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S U R E .
@heather040200 : he will explain to you from the beginning :D Enjoy !
and i will check it later just in case ^_~
ryan123345
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Ill help :)
ryan123345
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\[\cos (g)=\frac{ 10 }{ 20 }\]
heather040200
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kkk so i got 30
ryan123345
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\[g=(\frac{ 1 }{ 2 }) \cos^{-1} \]
heather040200
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so 15?
ryan123345
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@Eyad fan me so i can message u
heather040200
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HELLO is my answer right??
ryan123345
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its not 30
heather040200
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is it 15
ryan123345
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try plugging in equation I wrote with the cos
ryan123345
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to the calculator
heather040200
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i got 60
ryan123345
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Good Job. so now you know that g is 60 deg
heather040200
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ok so now how do we get i
ryan123345
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i is a degree or a side i cant really tell
heather040200
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side
heather040200
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so cos=20/10 =60
ryan123345
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ok so now since you know that the |dw:1365476272169:dw|
Eyad
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|dw:1365474950733:dw|
heather040200
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J is just the brown triangle you have in your pic
ryan123345
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|dw:1365476405488:dw|
heather040200
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so is i=sqrt.3
ryan123345
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yes :)
heather040200
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ok so now how do we get j
|dw:1365482366945:dw|
ryan123345
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|dw:1365476773129:dw|
heather040200
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sqrt9
ryan123345
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which is? :)
heather040200
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3 is the answer
ryan123345
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Good Job :)
heather040200
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thank you so much for your help :)
ryan123345
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No problem. I'm always here :)
heather040200
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ok cuz i have a cople more questo