Answer:
See below
Step-by-step explanation:
REMEMBER sec = 1/cos ...so the left side is
[1/cos -1] / [1/cos +1 ]
get common denominator for numerator and denominator
[ (1 -cos) /cos ] / [ (1+cos) / cos ]
now flip the bottom fraction and multiply to get
[(1-cos/cos) ] * [ cos / (1+cos) ] which simplifies to ( the 'cos' term cancels)
(1-cos) / (1+cos) done !
Answer:
14.8
Step-by-step explanation:
4(2)+3.4(2)
8+6.8
14.8
The answer is 66
I have to type more...Hi
Answer:

Step-by-step explanation:
To find which one is prime, let's try to factor them all. We can use the factoring by grouping method.

and
and
So this one is not prime, since you can still factor it.

and
and
So this one is not prime, since you can still factor it.

and
and
So this one is not prime, since you can still factor it.

and
and -x+2 cannot be further factored.
Therefore,
is a prime.