Age-based funds have traditionally been thought of as retirement funds. However, there has been a surge of popularity of their use in the 529 plans as well. A 529 plan is a mutual fund set up for college savings. As with retirement funds, the 529 fund changes its risk as the beneficiary of the money ages.
The radian is a unit of angular measure defined such that an angle of one radian subtended from the center of a unit circle produces an arc with arc length 1. A full angle is therefore radians, so there are per radians, equal to or 57./radian. Similarly, a right angle is radians and a straight angle is radians. for measured in radians. Unless stated otherwise, all angular quantities considered in this work are assumed to be specified in radians.
Since, on a unit circlethe radian measure of an angle and the arc. , -length spanned by an. angle are the. same. value, in order to find the radian measure of a complete rotation around a. circle (i.e., 360. ï¯. ), we need to find the arc-length of an entire unit circle.