Find the size of angle XYZ give your answer to 1 decimal place

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25