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Home Q & A Board Science-Related Homework Help Mathematics
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tommynkell tommynkell
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11 years ago
Im confused with trigonometry Confounded Face

i understand the Sin, Cos, Tan

Soh Cah Toa


but i dont understand how u change into degree form

say

 4.00 cm / 7.21 cm = 0.5548

sin(A) = 0.5548

but how would i change that to a degree??
0.5548 = sin(33.7°) how to get that degree??

do i just measure with protractor ?
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wrote...
#1
11 years ago
Use either trigonometrical tables or the calculator
wrote...
#2
11 years ago
Use the inverse sin function on your calculator.
sin(A) = 0.5548
A = sin^-1(0.5548) = 33.7 deg.
wrote...
#3
11 years ago
inverse of 0.5548 will get u the degree
wrote...
#4
11 years ago
you get the result degrees or  radian from a table of sin

knowing that pi radian = 180 degrees multiply by 180/pi to get degrees
wrote...
#5
11 years ago
A calculator should have an "inverse sine" or "arcsin" function.

arcsin (0.5548) = 33.7 degrees.
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