Cos(x)-cos(x-pi/3)=cos(x+pi/3)​

According to the earth science reference tables, during which geologic time period were the continents of north america, south america, and africa closest together?

What do muslims believe a prophet is? a deity an angel a minister a messenger

In upholding louisiana's separate car act, the supreme court claimed thatsegregation was not the same as discriminationthe fourteenth amendment did not apply to southern statesdiscrimination was necessary in order to maintain public ordero segregation was unconstitutional based on the fourteenth amendment