Plot the x-intercept of the function f(x) = (x + 4)2.
10
8
-6
-4
--2
46
Click or tap the graph to plot a point.

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.