How does tolerance in multiplication work.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual