Role-Play Scenario Tips continued Scenario #3 â Long Term Employee With Some Performance Issues Show appreciation. (âWe value your stability and reliability.â) Ask how the employee thinks things are going. His/her responses may help you decide how to proceed. Remember to focus on performance, not the person. Give specific examples illustrating how the employeeâs performance did not meet your expectations.
The Law of Cosines (also called the Cosine Rule) is very useful for solving triangles: It works for any triangle: a, b and c are sides.
The trigonometric functions are also important in physics. The sine and the cosine functions, for example, are used to describe simple harmonic motion, which models many natural phenomena, such as the movement of a mass attached to a spring and, for small angles, the pendular motion of a mass hanging by a string.he notations sin â1 and cos â1 are often used for arcsin and arccos, etc. When this notation is used, the inverse functions could be confused with the multiplicative inverses of the functions. The notation using the arc- prefix avoids such confusion, though arcsec can be confused with  arcsecond .