Final answer:
To convert an angle from degrees, minutes, and seconds to decimal degrees, divide the minutes by 60 and add it to the degrees. The conversion of 9°17.57' equals to 9.2928°.
Step-by-step explanation:
The conversion of an angle from degrees, minutes, and seconds to decimal degrees is needed. The given angle is 9°17.57'. To convert, the minutes and seconds must be put into decimal form. Since there are 60 minutes in a degree, we convert the minutes by dividing by 60. Thus, the minutes contribution to the angle in decimal degrees is 17.57/60 which gives 0.2928°. Therefore, we add this to the 9 degrees to find the total angle in decimal degrees.
9° + 0.2928° = 9.2928°
So the correct answer is A) 9.2928°.