Use the polynomial remainder theorem. It says that a polynomial
has remainder
upon division by
.
Here we have

and
, so the remainder is

False. Btw this is a computer and technology question not a mathematic question
Answer:
cos(A)=√21/5
Step-by-step explanation:
Use the definition of each function as well as the Pythagorean Theorem.
Hope it helps :>
I would say read it well and then write down an equation or expression to represent the data so its easier for you to understand and/or solve.