Answer:

Step-by-step explanation:
We can use the double angle identity for sine.

The given expresion is 

We apply the identity to get:

We simplify to obtain;

This simplifies to:
 The correct answer is D
 The correct answer is D
 
        
             
        
        
        
Answer:
As shown in picture, this circle has radius 1.5 and passes (0, 1.5)
=> According to the general form of equation of circle that has radius r and passes (a, b): (x - a)^2 + (y - b)^2 = r^2, we have:
x^2 + (y - 1.5)^2 = 1.5^2 
<=>
x^2 + (y - 1.5)^2 = 2.25
Hope this helps!
:)
 
        
             
        
        
        
Answer:
Pages 100 and 101
Step-by-step explanation:
Round 201 to 200 (to make it easier).
Divide 200 by 2, because it is 2 pages.
You are left with 100. 
100 is one of the pages, but because you rounded down 1 number, the other number must be 101, because the pages are back to back.
I hope this made sense, this is just how I figured it out. :)