cos²150 + cos²30

I do not understand what you are supposed to do with the ² symbol following the tan, cos, sin things.

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- May 16th 2007, 06:27 PMTrenttTrigonometry problem
cos²150 + cos²30

I do not understand what you are supposed to do with the ² symbol following the tan, cos, sin things. - May 16th 2007, 06:43 PMtopsquark