State the most appropriate metric units to use to measure the distance between los angeles and new york.. . . . . a. kg . . . . b. m . . . . c. km . . . . d. cm .

First, we cancel out letter A from the choices as kilogram is a unit for mass. The answer for the problem above is letter C. kilometer. Meter and centimeter are also units of distance; however, they are to be used only for very short distances. 

Sin(a)+cos(a)+cot(a)-1=2(csc(x)+1)