You are adding to rational numbers with different signs. how can you tell if the sum will be positive, negative, or zero? #24

It will be zero if they are the same numbers like 12+-12=0 it will be negative if the negative is a higher number like -12+6=-6. it will be positive if the positive number is higher than the negative number like 12+-2=10.

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.

Answer a. you’re welcome