Mathematics, 11.02.2021 20:40 coolkid20034

A conservation officer needs to know the width of a river in order to set instruments correctly for a study of pollutants in the river from point A the conservation officer walks 90ft down stream and sights point B on the opposite bank to determine that 0=30° how wide is the river

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A conservation officer needs to know the width of a river in order to set instruments correctly for...