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Missaa143

Needing help(: PLEASE!

  • 11 months ago
  • 11 months ago

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  1. luckythebest
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    so whats the question sir

    • 11 months ago
  2. Missaa143
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    • 11 months ago
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  3. Missaa143
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    • 11 months ago
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  4. Missaa143
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    answers to the bottom –70.3 12.4 11.1 6.5

    • 11 months ago
  5. Missaa143
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    answers to the top 3.7 11.5 3.3 4.5

    • 11 months ago
  6. luckythebest
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    Ok. so which trigonometric ratio would mean the ratio of \[\frac{ 9 }{ x }\]

    • 11 months ago
  7. SerikMB
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    use sine theorem

    • 11 months ago
  8. SerikMB
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    note sin(90)=1

    • 11 months ago
  9. Missaa143
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    wait what lol sorry guys im not that great at this :(

    • 11 months ago
  10. luckythebest
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    @Missaa143 at least you are aware that there is something called sin x, cos x etc etc etc ?

    • 11 months ago
  11. Missaa143
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    yes

    • 11 months ago
  12. SerikMB
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    ok, let's consider the first one

    • 11 months ago
  13. SerikMB
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    use pythogorean theorem to find hypothenuse (the longest side of right triangle)

    • 11 months ago
  14. Missaa143
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    okay right

    • 11 months ago
  15. SerikMB
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    hypothenuse^2=5^2+x^2

    • 11 months ago
  16. SerikMB
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    hypothenuse/sin(90)=x/sin(42)

    • 11 months ago
  17. luckythebest
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    @Missaa143 so you know which side divided by which side is cos of any angle?

    • 11 months ago
  18. Missaa143
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    okay gotcha!

    • 11 months ago
  19. SerikMB
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    or you can go directly, x/sin(42)=5/sin(90-42)

    • 11 months ago
  20. Missaa143
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    7/30

    • 11 months ago
  21. Missaa143
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    = 0

    • 11 months ago
  22. luckythebest
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    u can also use Tan of 42 = x / 5.

    • 11 months ago
  23. Missaa143
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    true! ^

    • 11 months ago
  24. Missaa143
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    ill say the first one is 3.3 ?

    • 11 months ago
  25. SerikMB
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    \[\frac{ x }{ \sin(42) }=\frac{ 5 }{ \sin48 }\]

    • 11 months ago
  26. SerikMB
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    no it will be 4.5

    • 11 months ago
  27. Missaa143
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    Ooooo okay i get it!

    • 11 months ago
  28. luckythebest
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    in 2nd one you have hypotenuse = x, and base = 9. So which trig. ratio means base/hypotenuse?

    • 11 months ago
  29. Missaa143
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    i think its D ?

    • 11 months ago
  30. msoemosharro
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    I think it would be easier if you use tan(42)=x/5 => x=5tan(42)

    • 8 months ago
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