The answer is false. :) and do u need points to ask questions?
First, simplify the expression
Here you have three terms with
group them in the following way:


Then substitute s=-3 and t=5:

Answer: 19.
That would depend on how big or small the square is.
D.
Step-by-step explanation:
because cos0 = b/h
so cos0 = 8/15