geekfromthefutur
  • geekfromthefutur
Can someone help me plz its my last question
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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geekfromthefutur
  • geekfromthefutur
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SolomonZelman
  • SolomonZelman
You can almost use the sin law: i.e. Sin(35) /h = Sin(H) /660
SolomonZelman
  • SolomonZelman
you just need to find the H, and then apply the sine law to solve for h.

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geekfromthefutur
  • geekfromthefutur
ok so how would i do that i see it right there
SolomonZelman
  • SolomonZelman
you know that the angle T=90, O=35 and the only unknown angle is H. There is a rule, that the sum of all angles in a triangle is equal to 180 degrees. In your case that would mean that T + O + H = 180 you know angles T and O, but not the H, so: 90 + 35 + H = 180 (the find H)
geekfromthefutur
  • geekfromthefutur
OHHH every triangle equals up to 180 degrees
geekfromthefutur
  • geekfromthefutur
so what we would do is grab 180 and subtract it and do 180 - 90 - 35=
SolomonZelman
  • SolomonZelman
not "up to" 180 degrees, but EXACTLY 180 degrees.
SolomonZelman
  • SolomonZelman
yes, very nice. H=180-90-35
geekfromthefutur
  • geekfromthefutur
55
SolomonZelman
  • SolomonZelman
Yes, that is correct
SolomonZelman
  • SolomonZelman
Now we can use the sine law Sin(35) /h = Sin(H) /660 plugging in our H, Sin(35) /h = Sin(55) /660
geekfromthefutur
  • geekfromthefutur
Sweet so thats it h is 55
SolomonZelman
  • SolomonZelman
no lowercase h is the height. The angle you need ed and found to be 55 is H, uppercase.
geekfromthefutur
  • geekfromthefutur
Sin(35) /55 = Sin(55) /660
SolomonZelman
  • SolomonZelman
no, you didn't find h, you only found H.
geekfromthefutur
  • geekfromthefutur
o i get it
SolomonZelman
  • SolomonZelman
(lowercase H is the angle. you used the rule about the sum of angles in a triangle to obtain H. the h, lowercase, you still need to find.)
SolomonZelman
  • SolomonZelman
yes....
SolomonZelman
  • SolomonZelman
Sin(35) /h = Sin(55) /660
SolomonZelman
  • SolomonZelman
now, use your calculator, and you are done.....
geekfromthefutur
  • geekfromthefutur
0.819 i got for sin55
geekfromthefutur
  • geekfromthefutur
1.24 for it divided
SolomonZelman
  • SolomonZelman
Sin(35) /h = Sin(55) /660 samewise, h / Sin(35) = 660/ Sin(55) h = 660 * Sin(35) / Sin(55)
SolomonZelman
  • SolomonZelman
http://www.wolframalpha.com/input/?i=660+*+Sin%2835%29+%2F+Sin%2855%29
SolomonZelman
  • SolomonZelman
(the approximate result, is under "decimal approximation")

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