Is (2,5) a solution of the system

No because if you do the higher number minus the lower number you will get a positive. if you do it the other way around you will get a negative number

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.

6/ 11 = 0.545454 so your answer is55%