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Unofficialllyy

  • one year ago

Can someone check my 10 Geometry questions? I will fan and medal :)

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  1. Unofficialllyy
    • one year ago
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    1. Look at the triangle: What is the value of sin x°? My answer: 5 divided by 13

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  2. misty1212
    • one year ago
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    HI!!

  3. misty1212
    • one year ago
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    yeah \(\frac{5}{13}\)

  4. Unofficialllyy
    • one year ago
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    2. Look at the figure: If tan x° = 11 divided by r and cos x° = r divided by s, what is the value of sin x°? My answer: \[\sin x= \frac{ 11 }{ s }\]

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  5. jim_thompson5910
    • one year ago
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    correct on that one too

  6. Unofficialllyy
    • one year ago
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    3. Max observes the zoo and the library from a helicopter flying at a height of 200 times square root of 3 feet above the ground, as shown below What is the distance between the zoo and the library? My answer: 400 feet

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  7. Unofficialllyy
    • one year ago
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    @jim_thompson5910

  8. jim_thompson5910
    • one year ago
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    yep you got it

  9. Unofficialllyy
    • one year ago
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    4. If the cos 30° = square root 3 over 2, then the sin 60° = _____. My answer: square root 3 over 2, because the angles are complementary.

  10. jim_thompson5910
    • one year ago
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    yep sin(x) = cos(90 - x) where 0 <= x <= 90

  11. Unofficialllyy
    • one year ago
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    5. Use the image below to answer the following question. What relationship do the ratios of sin x° and cos y° share? My answer: The ratios are both identical (6/10 and 6/10)

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  12. jim_thompson5910
    • one year ago
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    correct, same reason as before

  13. jim_thompson5910
    • one year ago
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    well you can reduce 6/10 to get 3/5

  14. Unofficialllyy
    • one year ago
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    Two birds sit at the top of two different trees. The distance between the first bird and a bird-watcher on the ground is 14.1 feet. The distance between the bird-watcher and the second bird is 27.9 feet. What is the angle measure, or angle of depression, between this bird and the bird-watcher? My answer: 30.4

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  15. anonymous
    • one year ago
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    soh cah toa - sin soa - opposite / adajenct enjoy:)

  16. jim_thompson5910
    • one year ago
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    30.356338108109 degrees which rounds to 30.4 degrees (assuming you are going for the nearest tenth). So you got it

  17. Unofficialllyy
    • one year ago
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    The picture shows a barn door: What is the length of the support AB? My answer: 9/sin60

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  18. Unofficialllyy
    • one year ago
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    @jim_thompson5910 I only have a few more to be checked :)

  19. jim_thompson5910
    • one year ago
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    yeah then you use a calculator to compute 9/(sin(60)) make sure you're in degree mode

  20. Unofficialllyy
    • one year ago
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    The picture shows a triangular island: Which expression shows the value of c? I didn't get this one.

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  21. jim_thompson5910
    • one year ago
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    hint: tan(45) = a/b sin(45) = a/c cos(45) = b/c

  22. Unofficialllyy
    • one year ago
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    Okay one second :)

  23. Unofficialllyy
    • one year ago
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    I'm not positive, but I think it's b/cos45

  24. jim_thompson5910
    • one year ago
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    either that or c = a/sin(45)

  25. Unofficialllyy
    • one year ago
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    My choices are b/tan45 b/cos45 a cos 45 a tan 45

  26. Unofficialllyy
    • one year ago
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    So I will go with b/cos45.

  27. Unofficialllyy
    • one year ago
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    Two ropes, AD and BD, are tied to a peg on the ground at point D. The other ends of the ropes are tied to points A and B on a flagpole, as shown below: Angle ADC measures 60° and angle BDC measures 30°. What is the distance between the points A and B on the flagpole? My answer: 10 feet

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  28. Unofficialllyy
    • one year ago
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    @jim_thompson5910

  29. Unofficialllyy
    • one year ago
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    I got a 100 :)

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