If you report two measurements of mass, 7.42 g and 7.56 g, are the measurements accurate? are they precise? explain your answers.

They are not accurate, because you don't know what the target is but they are precise since they are close in range.

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.