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Karson Greer
Mathematics
14 August, 13:21
Sin (x+20) - cos (2X+10)
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Lilliana Whitney
14 August, 13:39
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X=20
Step-by-step explanation:
Sin (x+20) = cos (2x+10)
Sin (x+20) = sin (90 - (2x+10)
X+20=90-2x-10
3x=60
X=20
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