F(x) = the integral from 0 to x cos(t2)dt use your calculator to find F'(1)

The answer is 225 miles per 4.5 hours. hope this ; )

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.