Which expression is equivalent to ^(2)(tan((x)/(2)))

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

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Acompany had forty one employees and ordered nine hundred eighty uniforms for them. if they wanted to give each employees the same number of uniforms, how many more uniforms should they order so they don't have any extra