Answer:
The answer is x=35
Step-by-step explanation:
hope this helps
Answer: 35%
1. 26 fiction books divided by all 40 books equals 65% fiction books.
2. Then do 100% - 65% to get 35%
OR
1. All 40 books minus 26 fiction books
= 14 nonfiction books.
2. Do 14 divided by 40 to get 0.35, = 35%
This is the good part of Trigonometry, actually measuring triangles. It's much better than all the identities around sine and cosine and the rest, which actually have more to do with circles than triangles.
This part of trig has a short menu:
Law of Cosines. Three ways to write it, one is 
Law of Sines: 
Triangle angles: 
and two special cases of the Law of Cosines, the Pythagorean Theorem

and the Collinear Points Theorem:


Here we choose Triangle Angles followed by Law of Sines:
A = 180 - 105 -15 = 60 degrees


Answer: 1.8 cm
When I was a student we'd be expected to get
exactly and get

But that was before online homework.