find the equation of the axis of symmetry of the following parabola using graphing technology y=5x^2 - 50x + 130

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.

Hello!
your answer should be c