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Unofficialllyy

  • one year ago

Could someone help me with 5 Geometry questions? I will fan and medal :)

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  1. Unofficialllyy
    • one year ago
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    1. Given the triangle below, which of the following is a correct statement? \[\cot <B=\frac{ 6 }{ 5 }\] \[\csc <C=\frac{ 3 }{ 4 }\] \[\cot <C=\frac{ 8 }{ 5 }\] \[\csc <B=\frac{ 4 }{ 3 }\]

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  2. anonymous
    • one year ago
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    Do you still remember your inverse trigonometric ratios?

  3. Unofficialllyy
    • one year ago
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    Yes. csc= hypotenuse/opposite sec=hypotenuse/adjacent cot=adjacent/opposite

  4. anonymous
    • one year ago
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    okay cool :) So from there, it is just trial and error as you see which of A,B,C or D is correct ^^

  5. Unofficialllyy
    • one year ago
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    I'm kind of confused though, the csc options are 3/4 or 4/3 but where are they getting those numbers from?

  6. anonymous
    • one year ago
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    There are gotten, by interpreting the diagram :) Here I'll explain how to get the correct one !

  7. Unofficialllyy
    • one year ago
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    I think it's the last option

  8. anonymous
    • one year ago
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    Yeah it is the last one !

  9. Unofficialllyy
    • one year ago
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    I just realized that 8 is the hypotenuse and half of 8 is 4, and the opposite is 6 and half of 6 is 3 :)

  10. anonymous
    • one year ago
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    yeah, simplification is the way to go ^^

  11. Unofficialllyy
    • one year ago
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    I have 4 more so let me post the next one. 2. Use △DEF, shown below, to answer the question that follows: What is the value of X rounded to the nearest hundredth? Type the numeric answer only.

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  12. anonymous
    • one year ago
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    Ah no problem !

  13. anonymous
    • one year ago
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    So do you know how to start the next one? Do you remember your trig formulas for both Right angle and non-right angle triangles ?

  14. Unofficialllyy
    • one year ago
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    No not off the top of my head

  15. anonymous
    • one year ago
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    Ah okay, I'll help out ! Sine Rule for non-right angle triangles is SinA = SinB a b

  16. anonymous
    • one year ago
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    Alternatively, when you forget next time, you can quickly search via the internet for the formulas : )

  17. anonymous
    • one year ago
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    In this particular question, we are working with the formula SinA = SinB a b

  18. Unofficialllyy
    • one year ago
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    I think I got it, one sec.

  19. anonymous
    • one year ago
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    Alright cool ~

  20. Unofficialllyy
    • one year ago
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    41.51?

  21. anonymous
    • one year ago
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    Yes ! that is correct

  22. Unofficialllyy
    • one year ago
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    Yay!! 3. In △PQR, find the measure of ∡P. A. 30.4 degrees B. 35.9 degrees C. 54.1 degrees D. 59.6 degrees

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  23. anonymous
    • one year ago
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    Alright, so now we are working with a right angle triangle, so the formulas we resort to are SOHCAHTOA

  24. anonymous
    • one year ago
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    Which of the standard trig ratios do you think it is ?

  25. Unofficialllyy
    • one year ago
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    Do I use the tangent function ?

  26. anonymous
    • one year ago
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    Right again mate ^^

  27. Unofficialllyy
    • one year ago
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    Okay I got 30.4

  28. anonymous
    • one year ago
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    Correct !

  29. Unofficialllyy
    • one year ago
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    4. Find the value of the csc 40° using your calculator. This one is pretty easy lol I got 1.556

  30. anonymous
    • one year ago
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    yeap, way ahead of me haha, i just checked and your correct :)

  31. Unofficialllyy
    • one year ago
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    5. In △JKL, solve for x. A. 74.89 B. 30.29 C. 38.16 D. 66.73

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  32. anonymous
    • one year ago
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    By the way, do you sometimes forget your inverse trig ratios? Because I got a neat trick that you can't forget them :)

  33. Unofficialllyy
    • one year ago
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    Yeah I do sometimes!

  34. anonymous
    • one year ago
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    The trick is to remember every 'third' letter of the inverse function For example Se'c' = Cos Co's'ec = Sin Co't' = Tan

  35. Unofficialllyy
    • one year ago
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    Oh wow I didn't even realize that!

  36. anonymous
    • one year ago
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    Anyways, back on track :) I've got a solution for our next question ^^

  37. anonymous
    • one year ago
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    Yeah haha, its a hidden trick that I picked up a while back ~

  38. Unofficialllyy
    • one year ago
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    Do I use the cosine function?

  39. anonymous
    • one year ago
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    yeah that's correct !

  40. Unofficialllyy
    • one year ago
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    I got 38.16

  41. anonymous
    • one year ago
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    Yes that correct !

  42. Unofficialllyy
    • one year ago
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    Thank you so much, you were so helpful!

  43. anonymous
    • one year ago
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    Glad to be of such help, anytime !

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