anonymous
  • anonymous
please help, The picture shows a triangular island. Which expression shows the value of q? A. r cos 55° , B. r sin 55°, C. s/sin55°, D. s/cos55°
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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hartnn
  • hartnn
do you know the definitions of sin and cos ratios ?
anonymous
  • anonymous
sin opposite/hypot. cos adj/hypot. ?

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hartnn
  • hartnn
correct! so, can u find sin 55 and cos 55 ?
hartnn
  • hartnn
what is adjacent side of 55 degree angle what is hypotnuse and what will be cos 55 then ?
anonymous
  • anonymous
adjacent is s, hypotnuse is q, so s/q
hartnn
  • hartnn
good!! cos 55 = s/ q so, q =.... ?
anonymous
  • anonymous
cos 55 times s?
hartnn
  • hartnn
not actually, first multiply 'q' on both sides, what u get ?
anonymous
  • anonymous
s divided by cos 55 ?
hartnn
  • hartnn
correct! :)
anonymous
  • anonymous
yay thank you!
hartnn
  • hartnn
welcome ^_^

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