## heather040200 2 years ago HELP! Pic Below I GIVE MEDALS :) find g,i and j

1. heather040200

can you help me?? @e.cociuba

2. heather040200

thanks

3. heather040200

4. heather040200

or j??

5. heather040200

|dw:1365476931530:dw|

The first figure which contain angle g ,Is it a right angle ?

7. heather040200

yes

it should be |dw:1365471862587:dw| Anyway ,Since this is a right angle triangle then Use Sine, Cosine or Tangent . Where Sin=opp/Hyp. Cos=adj/hyp. tan=opp/adj You got it ?

9. heather040200

yes i understand

Great,Can you deduce the value of g ?

11. heather040200

would it be 10

How did you get that ?

13. heather040200

idk lol would it be 20/10=2?

you are calculating the coefficient of g which is an angle Since you were given the Opp and the hypo. ,Therefore you will use the sin Sin(g)=10/20= ?

15. heather040200

sin(q)=0.5

Nope, You need to get the angle Sin^-1=10/20= ?

17. heather040200

i don't understand

If Sin(a)=1 and you need to get the coefficient of a ,how To get a ? Type on your calculator Shift+Sin+1 and the result will be the coefficient of a . Can you follow the steps ?

19. heather040200

ok igot 0.017

Ugh,No that;s wrong . Check this http://www.picalc.com Type : asin(10/20)= ?

21. heather040200

soryy i got a pelletty caculater,,,i got 30

23. heather040200

ok so g=30 lol

Yes *cry out of happiness*

25. heather040200

Yay!lol so then is i=60?

i is an angle in another figure ! not this figure right ?

27. heather040200

yup but its not a angle i drew it

In the other Triangle Do the same Steps (sin,cos,tan) And notice that : That median cut the line to two equal parts (The same length)

@ryan123345 :May you continue ,Because i want to drink something +_+ ...

30. ryan123345

lol

ok ^ ?

32. ryan123345

Well I rather explain it to her from the begining

33. heather040200

so can u help me plezz! :)

S U R E . @heather040200 : he will explain to you from the beginning :D Enjoy ! and i will check it later just in case ^_~

35. ryan123345

Ill help :)

36. ryan123345

$\cos (g)=\frac{ 10 }{ 20 }$

37. heather040200

kkk so i got 30

38. ryan123345

$g=(\frac{ 1 }{ 2 }) \cos^{-1}$

39. heather040200

so 15?

40. ryan123345

@Eyad fan me so i can message u

41. heather040200

42. ryan123345

its not 30

43. heather040200

is it 15

44. ryan123345

try plugging in equation I wrote with the cos

45. ryan123345

to the calculator

46. heather040200

i got 60

47. ryan123345

Good Job. so now you know that g is 60 deg

48. heather040200

ok so now how do we get i

49. ryan123345

i is a degree or a side i cant really tell

50. heather040200

side

51. heather040200

so cos=20/10 =60

52. ryan123345

ok so now since you know that the |dw:1365476272169:dw|

|dw:1365474950733:dw|

54. heather040200

J is just the brown triangle you have in your pic

55. ryan123345

|dw:1365476405488:dw|

56. heather040200

so is i=sqrt.3

57. ryan123345

yes :)

58. heather040200

ok so now how do we get j |dw:1365482366945:dw|

59. ryan123345

|dw:1365476773129:dw|

60. heather040200

sqrt9

61. ryan123345

which is? :)

62. heather040200

63. ryan123345

Good Job :)

64. heather040200

thank you so much for your help :)

65. ryan123345

No problem. I'm always here :)

66. heather040200

ok cuz i have a cople more questo