The answer is 70 . if it is 75 or higher then it wold be rounded to 80
Answer:
B
Step-by-step explanation:
The other answers don't divide into rational numbers
(18-2X)(8-2X)
Take each side and subtract 2X, then multiply them together for the area.
Answer:
E
Step-by-step explanation:
The expression given is: sec β - cos β ( i will write "beta" instead of the symbol β)
<em>We know that
</em>
<em>Substituting this into the the expression and doing some algebra manipulation, we have:</em>

<em>Using the identity
(also
), we can now write:</em>

<em>We know
, substituting this, we have:</em>

Answer choice E is the right answer.