A spider hangs from a tree branch at the end of a 1.8 m thread of web. She spots a dog running right at her in hot pursuit of a squirrel, and needs to get out of the way fast. She fires a very brief blast from her jetpack, which almost immediately gives her a speed of 3.7 m/s horizontally. She swings up along a circle and comes to a stop when her thread makes an angle q relative to the vertical. What is q in degrees?