1) Given that cos theta = -1/3 and theta is in quadrant 3, find tan 2 theta?
2) Given that cos theta =-0.5 and theta is in quadrant 2 find sin theta over 2?
3) Given that tan 2 theta = 3/4 and 2 theta is in quadrant 1, find tan theta?
4) cos x =-3/5 in the quadrant 2 and sin y= 4/5 in the quadrant 1. Evaluate sin(x+y)
I need help with these four questions

Avegetable garden and a surrounding path are shaped like a square together are 12 ft wide. the path is 1 feet wide. if one bag of gravel covers 8 square feet, how manu bags are needed to cover the path? round your answers to the nearest tenth.

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius

One hectometer is a) 1/1000 of a meter. b) 1/100 of a meter. c) 10 meters. d) 100 meters. e) 1000 meters.