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Show that cos (45 + a)/(45 + a) = 1 - tan a/1 - tan a hence

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Show that cos (45 + α)/(45 + α) = 1 - tan α/1 - tan α , hence solve the equation 4cos (45 + α) = cos (45 – α) 0< α<90*

Reference no: EM132811529

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