Answer:
415 books, I dont understand the second question, sorry
Step-by-step explanation:
1 small box=20 books
1 big box=45 books
5 small boxes×20 books= 100 books
7 large boxes×45 books= 315 books
315 books+100 books=415 books
Isolating 2abCos(c) on one side of the equation and using the given values of a, b and c we can find the answer to this question as shown below:
Answer:
The value of 3 in 46.132 is 10 times the value of 3 in 8.553.
Step-by-step explanation:
The value of 3 in 46.132 is in hundredth's place.
The value of 3 in 8.553 is in thousandths place.
We can write as :
For 46.132, its value is
and for 8.553 its value is
.
Taking,

So, the value of 3 in 46.132 is 10 times the value of 3 in 8.553. Hence, the correct answer is A.
Answer:
For it to be parallel the answer is B (3)
Answer:
90°, 270°
Step-by-step explanation:
2r sin(Ф/2) = c
2r sin (Ф/2) = √2r
divide both sides by 2r
sin (Ф/2) = √2r/2r
sin(Ф/2) = √2/2
From the unit circle sin is √2/2 at 45°, and 135°
so Ф/2 = 45
Ф=90°
and Ф/2 = 135
Ф= 270°