use demoivre's theorem to evaluate the expression (3(cos cos(5pie/6)+isin(5pie/y^4 write the answer in rectangular form.

Which unit of measure would be the most appropriate to measure the capacity of a bottle of nail polish? a.fluid ounces b.cups c.pints d.quarts e.gallons

This is different from the first one can someone me

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?