FiveNick5
Find the cosine 315º. Round your answers to the nearest hundredth if necessary.
0
0.71
1
–0.78



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cwrw238
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dw:1354569688358:dw

cwrw238
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the cosine is positive in 4th quadrant
cos 315 = cos 45 = 1/ sqrt2 = 0.71 to 2 dec places

FiveNick5
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b

cwrw238
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yea

FiveNick5
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thanks

cwrw238
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yw