## pokemon23 3 years ago I need help figuring out these right triangle whether its cos,sin,tan...

1. tukajo

SOH-CAH-TOA

2. pokemon23

|dw:1351054383279:dw|

3. tukajo

Sin = Opposite/Hypotenuse Cos = Adjacent/Hypotenuse Tan = Opposite/Adjacent

4. pokemon23

I know that but I'm not sure I know x=opposite and 50 is adj

5. tukajo

solve for the other angle

6. tukajo

you have the corner angle as 54 degrees?

7. pokemon23

in this case is this a tan?

8. pokemon23

Tan(36)*41

9. tukajo

|dw:1351054517099:dw|

10. tukajo

correct?

11. tukajo

|dw:1351054589727:dw|

12. tukajo

correct?

13. tukajo

You there?

14. tukajo

|dw:1351054690061:dw|

15. pokemon23

so? i did it correctly?

16. tukajo

So Tangent = Adjacent over Opposite

17. tukajo

understand?

18. pokemon23

so x=64.35

19. pokemon23

but its say nearest centimeter

20. tukajo

Messed that up sorry. It's going to be tan(54) = x/50

21. tukajo

so solve for that.

22. tukajo

Tell me: Tan(54) = ?

23. pokemon23

1.37638192

24. tukajo

now solve using SOHCAHTOA

25. tukajo

so tan(54) = x/50

26. tukajo

so 1.376 = x/50 x = ?

27. pokemon23

I got 68.81

28. tukajo

correct

29. tukajo

round to nearest cm

30. pokemon23

which i 68.80 if im right

31. tukajo

whole centimeter bud

32. tukajo

so if you have 65.36 centimeters, rounding to 65.4 isn't rounding to the nearest centimeter, that would be millimeter.

33. pokemon23

facepalm..........

34. tukajo

you have to round to the nearest centimeter which would be 69

35. tukajo

understand?

36. pokemon23

so just 69.

37. tukajo

should be

38. tukajo

but do you understand why?

39. pokemon23

can you explain to the nearest centimeter.

40. tukajo

well if you have 66.74 centimeters that means you have 66 WHOLE centimeters and .74 of a centimeter correct?

41. tukajo

so why would you round to 66.7 centimeters? You would still have 66 centimeters and .7 of a centimeter

42. tukajo

Instead, you round to the next WHOLE centimeter which is 67, make sense?

43. pokemon23

because of third digit is higher than 5 it raises the number right.

44. tukajo

yes 5+ = round up 4- = round down

45. tukajo

so round these to the nearest centimeter for me: 55.34 = ? 57.49 = ? 73.50 = ? 110.2 = ?

46. pokemon23

kk

47. pokemon23

55 57 74 110

48. tukajo

correct :)

49. pokemon23

I think I got them all wrong T_T

50. pokemon23

oh.

51. tukajo

no you were all right

52. pokemon23

thank you :) for the help. your help me clear out my struggle.

53. tukajo

no problem, have a good day.