Exact Values of sin (theta)

  • Thread starter GreenPrint
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  • #1
GreenPrint
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Homework Statement



Does anyone know were I can find a table on the internet of the exact values of sin theta were theta is any whole angle from zero to ninety degrees

Example
sin 0 degrees
sin 1 degrees
sin 2
sin 3
sin 4
sin 5
...
sin 90

Homework Equations





The Attempt at a Solution



thank you I'm to lazy to calculate all of them on my own does anyone know where i could find a table I got about 10 of them done but don't want to waste hours of my llife calculating all 90 when they have already done so can some one point me in the right direction?
 

Answers and Replies

  • #2
CompuChip
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Short answer: you already wrote down the exact values (they are sin(1o), sin(2o), etc.)

Long answer: only for a few special angles, we can write sin(x) in closed form, for example as [itex]\frac{\pi}{a}[/itex] for some integer a. In most cases, this is not possible. If you want a table of decimal values, you can use a program like Mathematica, for example
http://www.wolframalpha.com/input/?i=Table[N[Sin[x+Degree],+5],+{x,+0,+90}]

Note the use of the function N[..., 5] which gives the results in 5 decimals and compare this to the "exact" table
http://www.wolframalpha.com/input/?i=Table[Sin[x+Degree],+{x,+0,+90}]
 
  • #3
vela
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Do a web search for "trig table" and links to a bunch of nicely formatted tables will come up.
 
  • #5
CompuChip
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However, there is

sin(pi/20) = 1/2 * (-1)^(9/20) * (-1 + (-1)^(1/10))
 
  • #6
dacruick
1,042
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use any computer program. then go y = sin(x)
then say x = 0.

while x<91
y=sin(x)
print y
x+=1
 

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