## tahtah99 Group Title two birds sit at the top of two different trees 17.8 feet away from one another. The distance between the first bird and a bird watcher on the ground is 37.4 feet. What is the angle measure, or angle of depression, between this bird and the bird watcher? 2 years ago 2 years ago

1. sunsetlove Group Title

2. sunsetlove Group Title

r u in flvs

3. tahtah99 Group Title

yess i am . do you know it?

4. sunsetlove Group Title

holed on

5. tahtah99 Group Title

allright :)

6. sunsetlove Group Title

17.8

7. sunsetlove Group Title

hold on

8. sunsetlove Group Title

Height of bird = 17.8 True (slant) distance from watcher to bird = 37.4 Angle theta = asin(17.8/37.4=28.4 degree

9. sunsetlove Group Title

dose that help

10. tahtah99 Group Title

omg yes ! thank you :) did u pass this test? hah

11. sunsetlove Group Title

ya i think

12. sunsetlove Group Title

do u know how to give medles

13. tahtah99 Group Title

i dont understand anything in it.

14. sunsetlove Group Title

it can help

15. tahtah99 Group Title

i only have like 4 more .

16. sunsetlove Group Title

if u want just ask and i will

17. tahtah99 Group Title

A lamppost casts a shadow 44 feet long. The angle measure of the shadow is 33°. How tall is the lamppost to the nearest tenth of a foot?

18. sunsetlove Group Title

hold on

19. sunsetlove Group Title

h/a

20. tahtah99 Group Title

whats h/a ?

21. sunsetlove Group Title

52.46

22. Hero Group Title

|dw:1325123708432:dw|

23. sunsetlove Group Title

it is COS

24. tahtah99 Group Title

your like saving my life. haha can you answer one more ?

25. sunsetlove Group Title

h is hypotenuse and a is adjacent

26. sunsetlove Group Title

yes

27. tahtah99 Group Title

Using ∡C of △CBA shown below, create three different trigonometric ratios using sine, cosine, and tangent. You will need to create your own angle and side measures for this task. For full credit, please provide both the ratio and work used to solve for a missing piece of the triangle. Round all solutions to the nearest hundredth.

28. Hero Group Title

You can create your own triangle

29. Hero Group Title

Actually, you should probably draw the triangle first

30. sunsetlove Group Title

got to my profile and look for the same ? every thing is there

31. sunsetlove Group Title

did it help

32. Hero Group Title

I don't know why she didn't just draw the triangle

33. Hero Group Title

34. tahtah99 Group Title

hahaha shush. idk how i would word it though. there was so much going on

35. sunsetlove Group Title

press draw its under ur box to tipe in |dw:1325124389359:dw| like this

36. Hero Group Title

|dw:1325124435420:dw|

37. tahtah99 Group Title

|dw:1325124401522:dw|

38. Hero Group Title

good job

39. sunsetlove Group Title

|dw:1325124444889:dw|

40. Hero Group Title

You could have made it look a little prettier than that sunset

41. tahtah99 Group Title

its beautiful .. belongs in a museum

42. sunsetlove Group Title

yes now 3^2 + 4^2 sholed = the other side

43. Hero Group Title

Okay sunset :D

44. tahtah99 Group Title

whats the three different trigonometric ratios using sine, cosine, and tangent?

45. Hero Group Title

Well, if we use sunset's approach:

46. sunsetlove Group Title

cos is a/h

47. Hero Group Title

|dw:1325124890880:dw|

48. sunsetlove Group Title

tan is o/a and sin is o/h

49. sunsetlove Group Title

dont use the ABC ONES they change if the tryangle is BAC or CAB use what i put

50. Hero Group Title

She has to use them because they are part of the problem. It has to be in terms of triangle CBA

51. sunsetlove Group Title

no afince Hero but i tryed doing it that way and it mest me up

52. Hero Group Title

It doesn't mess everyone up

53. sunsetlove Group Title

ok but remember it dont always aply just with this problim

54. tahtah99 Group Title

lol im so confused on this part here For full credit, please provide both the ratio and work used to solve for a missing piece of the triangle. what should i put for that ? it has to be in words

55. Hero Group Title

tahtah, I know you're taking a test

56. tahtah99 Group Title

ik you know im taking a test.

57. sunsetlove Group Title

ok you have to fined the tangent , cosine, and sine

58. Hero Group Title

You have to find the angles tahtah

59. sunsetlove Group Title

sine is opposite/hypotenuse

60. sunsetlove Group Title

61. tahtah99 Group Title

how do i find the angles ? i understand the cos and sin thingy now.

62. Hero Group Title

you have to take the inverse of the ratios

63. sunsetlove Group Title

64. sunsetlove Group Title

u fined the angles using sin cos and tan

65. Hero Group Title

sunset, she has to take the inverse of those ratios

66. sunsetlove Group Title

yes my bad but its still using it

67. Hero Group Title

$\sin^{-1}(\frac{3}{5})$

68. sunsetlove Group Title

yes

69. Hero Group Title

$\cos^{-1}(\frac{4}{5})$

70. Hero Group Title

$\tan^{-1}(\frac{3}{4})$

71. sunsetlove Group Title

trust hero hes smart

72. tahtah99 Group Title

thank you :) your smart too sunset.

73. sunsetlove Group Title

thank u good luck

74. tahtah99 Group Title

so i just solve that & it will be the angle?

75. Hero Group Title

You have to find the other two angles

76. Hero Group Title

Once you find angle A, you can use the sums of triangles = 180 rule to find the remaining angle.

77. tahtah99 Group Title

mmm would it be .64?

78. Hero Group Title

make sure you're in DEGREES, not radians

79. tahtah99 Group Title

ahhh . so 64 degrees? haha

80. Hero Group Title

Just make sure your calculator is in degrees first.

81. tahtah99 Group Title

omg now i got .92 ik thats wrong. i see why my teachers hate me

82. Hero Group Title

:/

83. tahtah99 Group Title

if you just get me the angle for A i can do the rest.

84. Hero Group Title

A = 36.87

85. tahtah99 Group Title

saved me. thanks so much man : )

86. Hero Group Title

You should probably figure out how to use your calc. You're lucky you get to do your test at home. Not every student is so lucky.

87. tahtah99 Group Title

i know :| geo. just isnt my thing

88. Hero Group Title

It could be if you wanted it to be

89. felixsalter Group Title

hold on, where's the answer for the original equation?