## KierseyClemons 2 years ago what is the ratio of said triangle

1. dan815

Tan b = Opposite side / adjascent side

2. dan815

remember SOH CAH TOA

3. dan815

Sin B = O/H Cos B = A/H Tan B = O/A

4. dan815

close

5. dan815

you are doing A/O

6. dan815

7. dan815

|dw:1368527552204:dw|

8. dan815

the line opposite the right angle is always hypotenuse

9. dan815

yes

10. KierseyClemons

haha thanks took me a while but I think I got ti

11. dan815

dont worry about it, it seems a little confusing at first, but its gonna be really easy soon

12. KierseyClemons

I have a few more if you don't mind? It's really hard for me to find help

13. dan815

well u know how to do it now dont you

14. dan815

just say the word Sohcahtoa

15. dan815

okay this is a soh cah toa problem again

16. dan815

what is sin x and cos x

17. dan815

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18. dan815

hello?

19. KierseyClemons

sorry browser closed out on me

20. dan815

thats fine, so look at that diagram

21. dan815

remember SohCah Toa

22. agent0smith

@KierseyClemons did you pick AB/BC for the first one? That's not correct for tanB... tan is opposite/adjacent - the opposite is AC, the adjacent is AB.

23. KierseyClemons

Oh ok wow thanks

24. KierseyClemons

so OH

25. KierseyClemons

For the second?

26. KierseyClemons

I mean A

27. dan815

yes good now what is OA = ?

28. dan815

O/A = ?

29. dan815

soh cah toa remember soh cah toa

30. KierseyClemons

wait what does that mean?

31. dan815

S oh --->Sin of Angle = O/H C ah ---->Cos of Angle = A/H T oa ---> Tan of angle = O/A

32. dan815

just remember it like 1 word, dont forget it

33. dan815

SOHCAHTOA, you will use this forever

34. KierseyClemons

kinda hard to remember that But i'll try

35. dan815

just think of it as 1 word xD

36. dan815

you just met a friend today, her name was Sohcahtoa are you gonna forget her name >_>

37. agent0smith

Also remember this one too:$\huge\tan x =\frac{ \sin x }{ \cos x }$

38. dan815

she just proved that lol

39. KierseyClemons

?

40. dan815

nope

41. agent0smith

Opposite of A is 15. Adjacent is 8.

42. dan815

look at the line that is not touching angle A that is opposite

43. dan815

yep

44. KierseyClemons

Yay! I'm getting there lol

45. agent0smith

I wouldn't have given you a medal if you were wrong :P

46. KierseyClemons

So is it the same thing for cos?

47. agent0smith

48. dan815

okay hold on

49. dan815

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50. KierseyClemons

k|dw:1368529054886:dw|

51. agent0smith

|dw:1368529107736:dw| Hypotenuse is always the longest side, and always opposite the right angle (90 degree angle)

52. agent0smith

Adjacent is the side that touches the angle (NOT the hypotenuse)

53. dan815

yes

54. dan815

remember that triangle and remember your friends name SOHCAHTOA the spelling will tell you O= opposite H = hypotenuse A=adajscent

55. dan815

no

56. dan815

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57. dan815

|dw:1368529425551:dw|

58. dan815

look at this diagram can you lable the opposite and adjacent side to b?

59. KierseyClemons

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60. dan815

61. dan815

he will explain to you clearly :)

62. agent0smith

hypotenuse is always the longest side. Always. It doesn't change, ever.

63. dan815

yes, but please watch that video

64. KierseyClemons

I did :) that's how I got that lol

65. dan815

ok good :)

66. dan815

you can watch all our math from that guy, he will teach you everything u need to know

67. KierseyClemons

I'll put onne more up and I think Ive gtten it down pretty much

68. agent0smith

Yes.

69. KierseyClemons

:)

70. agent0smith

To make sure, tell us cosA and tanA

71. KierseyClemons

Of that same angle right?

72. dan815

yes

73. agent0smith

Then, tell us sinB, cosB and tanB.

74. dan815

agent smith is a real tutor, u got home work already

75. KierseyClemons

cosA= 5/13 tanA= 12/5

76. agent0smith

Excellent. Now: sinB, cosB and tanB.

77. KierseyClemons

Sinb=5/13 cosB= 12/13 tanB= 5/12

78. dan815

good job:)

79. agent0smith

Excellent!

80. KierseyClemons

Yay! I got it lol that video really helped! You guys are awesome!

81. dan815

ya keep watching that guys stuff! he is a very good teacher

82. KierseyClemons

I will thanks! Just subscribed lol

83. dan815

i still watch him and iam in university

84. dan815

lol

85. KierseyClemons

I'm deff gonna be watching him when I get there lol

86. dan815

yep, what grade are you in?

87. KierseyClemons

10th :)

88. dan815

ah ok still a long ways off! i remember those grade 10 days

89. dan815

hahah too fresh

90. KierseyClemons

Haha!

91. dan815

just remember studies are really easy!! dont forget it and ull continue to do good.. the day you believe its too hard, u will start to do bad!

92. KierseyClemons

I might need help with these still tho

93. KierseyClemons

because it's not a picture

94. agent0smith

For that you might want to use a 30-60-90 triangle: http://www.freemathhelp.com/images/lessons/triangle306090-3.gif

95. KierseyClemons

Thank you!

96. agent0smith

Cos 30, cos 60, sin30, sin60 ... these should all be easy to find from that picture. If you need cos 45 or sin45, use this: http://www.biology.arizona.edu/biomath/tutorials/trigonometric/graphics/trig_45_45_90.gif