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Can anyone tell me what cos(315) is in exact values ? (I've lost my calculator)

9:37AM Sun, March 11 2012

4d42a7d92b6438d3e7d40ab3942e331a_normal @amfyyx

cos 90 + cos 90 + cos 90 + cis 45 so it's like 1+1+1+ cos 45 if that's what you mean? (I think)

9:44AM Sun, March 11 2012

anonymous Anonymous

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