anonymous
  • anonymous
Given the point (3, 4), which of the following shows that sinxcscx = 1? (3/4)(4/3) = 1 (3/5)(5/3) = 1 (4/5)(5/4) = 1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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hartnn
  • hartnn
Given the point (3, 4), can you find sin x=...?
anonymous
  • anonymous
I think ......Ill show a graph
anonymous
  • anonymous
|dw:1363005355574:dw|

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More answers

hartnn
  • hartnn
wait
Mertsj
  • Mertsj
|dw:1363005499577:dw|
hartnn
  • hartnn
(3,4) means x-co-ordinate = 3 y co-ordinate =4, so it'll be |dw:1363005449516:dw| can you find the hypotenuse = b= ...? using pythagoras theorem ?
anonymous
  • anonymous
yes
hartnn
  • hartnn
then can you find sin x = opposite side/hypotenuse =... ?
hartnn
  • hartnn
|dw:1363005619712:dw|
anonymous
  • anonymous
a^2+b^2=c^2 3^2+b^2=4^2 9+b^2=16 b^2=7 \[\sqrt{7}\]
Mertsj
  • Mertsj
\[a^2+b^2=c^2\]
Mertsj
  • Mertsj
\[3^2+4^2=c^2\]
hartnn
  • hartnn
you've taken incorrect sides... a= 3, b=4 find c=hypotenuse =..?
Mertsj
  • Mertsj
\[9+16=c^2\]
Mertsj
  • Mertsj
\[25=c^2\]
Mertsj
  • Mertsj
\[5=c\]
anonymous
  • anonymous
oh Im sorry 9+16=25 c^2=25 5=c
hartnn
  • hartnn
thats correct, now sin x = opposite side / hypotenuse =...?
anonymous
  • anonymous
oh it 4/5
hartnn
  • hartnn
yup, and csc x = hypotenuse/opposite side =...?
anonymous
  • anonymous
5/4
hartnn
  • hartnn
thats it, so (4/5)(5/4)=1
anonymous
  • anonymous
Yayy Thanks, this was really helpful, Ill try this on the rest of my problems!
hartnn
  • hartnn
welcome ^_^

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