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



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tukajo
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SOHCAHTOA

pokemon23
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dw:1351054383279:dw

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

pokemon23
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I know that but I'm not sure I know x=opposite and 50 is adj

tukajo
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solve for the other angle

tukajo
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you have the corner angle as 54 degrees?

pokemon23
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in this case is this a tan?

pokemon23
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Tan(36)*41

tukajo
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dw:1351054517099:dw

tukajo
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correct?

tukajo
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dw:1351054589727:dw

tukajo
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correct?

tukajo
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You there?

tukajo
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dw:1351054690061:dw

pokemon23
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so? i did it correctly?

tukajo
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So Tangent = Adjacent over Opposite

tukajo
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understand?

pokemon23
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so x=64.35

pokemon23
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but its say nearest centimeter

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

tukajo
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so solve for that.

tukajo
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Tell me:
Tan(54) = ?

pokemon23
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1.37638192

tukajo
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now solve using SOHCAHTOA

tukajo
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so tan(54) = x/50

tukajo
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so 1.376 = x/50
x = ?

pokemon23
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I got 68.81

tukajo
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correct

tukajo
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round to nearest cm

pokemon23
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which i 68.80 if im right

tukajo
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whole centimeter bud

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

pokemon23
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facepalm..........

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

tukajo
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understand?

pokemon23
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so just 69.

tukajo
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should be

tukajo
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but do you understand why?

pokemon23
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can you explain to the nearest centimeter.

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

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

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

pokemon23
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because of third digit is higher than 5 it raises the number right.

tukajo
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yes
5+ = round up
4 = round down

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

pokemon23
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kk

pokemon23
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55
57
74
110

tukajo
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correct :)

pokemon23
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I think I got them all wrong T_T

pokemon23
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oh.

tukajo
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no you were all right

pokemon23
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thank you :) for the help. your help me clear out my struggle.

tukajo
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no problem, have a good day.