Answer:
1.3 or 1.333333
Step-by-step explanation:
Just do it!
Answer:
12.9 cm ( nearest tenth )
Step-by-step explanation:
sin 40° =
( multiply both sides by 20 )
20 × sin 40° = b, hence
b = AC = 20 × sin 40° = 12.9
its never bc a triangle cant be 180
degrees
Answer:
Either (-2,1) or (2,1)
Step-by-step explanation:

means to say that for any given
, we can find
such that anytime
(i.e. the whenever
is "close enough" to 5), we can guarantee that
(i.e. the value of
is "close enough" to the limit value).
What we want to end up with is

Dividing both sides by 3 gives

which suggests
is a sufficient threshold.
The proof itself is essentially the reverse of this analysis: Let
be given. Then if

and so the limit is 7. QED