Urgent! need someone to properly calculate for degrees because my calculator doesn't give right answer for some reason!

cos^-1 (21.6/48.2)

tan^-1 (6.7/13.7)

Cos^-1 (21.6/48.2) ≈ 63.37°

tan^-1 (6.7/13.7) ≈ 26.06°

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.