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Azred · 11-10-2002, 09:20 PM

whacky and andrewas are completely correct. cos(x) = 0 for x = ((2k + 1)/2) * pi, where k is any integer value and x is a radian measure.

Calculators are funny. You can enter any number for a degree measure and it will give you the cosine of that number; however, if you enter any number in between -1 and 1 you will get the inverse cosine only for degrees between -90 and +90 degrees.

11-10-2002, 09:20 PM	#8
Azred Drow Priestess Join Date: March 13, 2001 Location: a hidden sanctorum high above the metroplex Age: 54 Posts: 4,037	whacky and andrewas are completely correct. cos(x) = 0 for x = ((2k + 1)/2) * pi, where k is any integer value and x is a radian measure. Calculators are funny. You can enter any number for a degree measure and it will give you the cosine of that number; however, if you enter any number in between -1 and 1 you will get the inverse cosine only for degrees between -90 and +90 degrees. __________________ Everything may be explained by a conspiracy theory. All conspiracy theories are true. No matter how thinly you slice it, it's still bologna.