Cos (pi/2-x) = sin x true or false?

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.

If i have 20$ and i gave 5$ away how much i got

What additional information could be used to prove abc =mqr using sas? check all that apply.