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Mathematics, 31.07.2021 23:40 jcbballer

Express 10sinxcosx + 12cos2x in the form Rsin(2x + a). Hence or otherwise solve 10sinxcosx + 12cos2x+7=0 in the range 0≤x≤360°​

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Express 10sinxcosx + 12cos2x in the form Rsin(2x + a). Hence or otherwise solve 10sinxcosx + 12cos2x...
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