lesson learned #1--copy all the figures, especially the DP and approach plates. There is NO way you can figure this out while flipping thru the book.
Whenever I try to create the formula for figuring the distance travelled in an arc, I get half what it should be.
circumference = 2(pi)r
distance for one degree of arc = (2(pi)r)/360
distance for so many degrees = degrees * (2(pi)r)/360
Substituting 1.5 for pi, I get degrees * 2*1.5*r/360 = degrees*3r/360 = degrees*r/120
It's supposed to be degrees * r / 60
No comments:
Post a Comment