How are the acute angles of the right triangle below related? Please don’t answer me with a link

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily