No, I don't believe you can change the default from radians to degrees.
You may want to check out the RADIANS() function.

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Tushar Mehta
www.tushar-mehta.com
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In article ,
says...
My Excel program is default radians and every time I enter a sin, cos,or tan
into the equation I have to convert to radians ie: *pi()/180. Is there any
way to change the settings to default degrees?