Use the diagram to derive the law of cosines.
which of the following statements is true?
b = c cos a
x = a cos c
c=h cos a
b/x=c/b

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x

Tan198=asin164=? how to solve this? ?