In triangle DEF, F= 150°, side
EF=9 m and side FD = 14 m.
Calculate the length of side DE.

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?

Asinusoidal function whose frequency is 1/6pi