The cosine of a certain fourth quadrant angle is 0.437. what is its sine?

  -0.899

Step-by-step explanation:

In the 4th quadrant, the sine is negative and the cosine is positive. The sine is ...

  sin(-arccos(0.437)) ≈ -0.899

You can also use the trig identity ...

  sin(x) = -√(1 -cos(x)²) = -√(1 -.190969) = -√.809031 ≈ -0.89946150557

The sine is about -0.899.

answer: there are x+184 pages in olivia's book.

step-by-step explanation:

let the total number of pages in the book which olive has already read be x.

then if olive has 184 pages left to read, then the total number of pages are in olive's book= pages she has read+pages she has left to read

therefore, the total number of pages in olivia's book=

hence, there are x+184 pages in olivia's book.