Answer: 25 books. you can buy 25 books with 5 dollars
Step-by-step explanation:
Step-by-step explanation:
please mark me as brainlest
It is neccesary because you cannot subtract them without having a common denominator so you have to rename 4 1/2
Positive cosine is first or fourth quadrant. So we don't know the sign of the sine or the tangent.
Everybody's favorite right triangle is 3/4/5 and here we have

So if

then

and

<h2>Long short story: I tried ;-; </h2>