Me i need to know the answer to this

I would say 115

because the angles should add up to 180 
so if you take 65 away from 180 = 115

that and its an obtuse angle so it need to be more than 90 but less than 180.

115 is my best guess

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.

The last one bc that's a calendar