It depends on how good the service was. it the service was really bad or just bad than maybe 2$, if the service was ok 5$ and finally if the service was extremely good and everything was just the way you like it then I would say tip 10$-20$
Sin= p/h , cos= b/h , tan= p/b
Can you show picture of sentences
Removing parentheses.
Subtract 0.02m from -0.1m to get -0.12m
Answer -
".02mn-0.12m-0.2"