BA ME MODS U BANNED MY FRIEND SHOYO FOR NO REASON SO MIGHT ASWELL BANN ME

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?