which algebraic expression has a term with a coefficient of three A: -2y+5+3 B: 3(y-6) C: 3y+1 D: 5y-7

B

A coefficient is a number multiplied by a variable
Ex: 14x 14x 14x 14 is the coefficient

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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.