Answer:
45°
Step-by-step explanation:
Using the cosine ratio in the right triangle
cosB = 
= 
= 
, hence
B = 
( ) = 45°
Symmetry means that if you split it in half, the two sides would be equal. For example, the letter X is symmetrical.
Answer: 127
Step-by-step explanation:
angle b is 127 as well because they're vertical angles and vertical angles are equal to each other.
The total number of pages is 1512 and assuming it is a 7 day week 1512/7 gives 216 pages. The answer is that the professor needs to read 216 pages each night to finish in a week
