Each chair in an auditorium is 2.1 feet wide. If there are 32 chairs in a row, exactly how long is a row?
www

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.