My matlab somehow in degree mode

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Qianliang
Qianliang 2014-9-22
评论： Star Strider 2014-9-22
I was trying to write some codes for signal processing. Somehow my sin,cos...commands are in degree mode. And I think those functions are somehow malfunctioned. Could anyone help me fix it?

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采纳的回答

Star Strider
Star Strider 2014-9-22
It is not in ‘degree mode’. The sin(pi)=0, or as close as MATLAB can get to it, that in this instance is approximately eps.
Compare:
s_rad = sin(pi)
s_deg = sind(pi)
produce:
s_rad =
122.4647e-018
s_deg =
54.8037e-003

更多回答（1 个）

Muthu Annamalai
Muthu Annamalai 2014-9-22
Have you tried the functions,
sind(180)
cosd(90)
etc ?
Also the MAP toolbox has the functions deg2rad and rad2deg
  1 个评论
Qianliang
Qianliang 2014-9-22
Thanks, but I am not looking for alternative code. I just want to fix it.

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