Answer:
2. el numero contante por que se suma o resta
Answer: 70 ft
Step-by-step explanation:
Given
height of book is measured by the function is

when the book is thrown 

The height of the book is 
Yo sup??
To solve this question we have to apply trigonometric ratios
sin31=UT/TV
TV=UT/sin31
=7.76
=7.8
Hope this helps.
Answer:
-5.02
Step-by-step explanation:
the result becomes negative because 7.273 is less than 12.37