How to find the angles measures using the law of sines and cosines

1. are the triangles similar and if so why? what is the value of x? show your work.

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?