Answer:
and 
Step-by-step explanation:
Recall that
is a value of the function cosine for the special angles:
and
, then:

Answer:
(0,2)(1,-4)((-1,8)
Step-by-step explanation:
Answer:
it looks decent just give it make it more detailed otherwise it looks good
Answer:
I don't understand the array of numbers as written in the question.
Step-by-step explanation:
See attached image
Answer:
57cm²
Step-by-step explanation:
area for trapezoid=
b¹+b²=x
x÷2=v
v×h=z
h=height
b=base
14+5=19
19÷2=9.5
9.5×6=57