The rays shown in the pictur: Ray VX, YZ , XY, ZV..... Plus more!
        
             
        
        
        
Answer: cos(Θ) = (√15) / 4
Explanation:
The question states:
1) sin(Θ) = 1/4
2) 0 < Θ < π / 2
3) find cos(Θ)
This is how you solve it.
1) Use the fundamental identity (in this part I use α instead of Θ, just for facility of wirting the symbols, but they mean the same for the case).

2) From which you can find:

3) Replace sin(α) with 1/4
=> 

=> 

4) Given that the angle is in the first quadrant, you know that cosine is positive and the final answer is:
cos(Θ) = 

.
And that is the answer.
 
        
             
        
        
        
Answer:
C
Step-by-step explanation:
if you plug the coordinates into the function it is correct unlike the other options 
 
        
             
        
        
        
To find the volume of this storage bin, you will use the formula for volume of a cylinder and of a cone.
V = Bh (cylinder)
 Pi x r^2 x h
 Pi x 2^2 x 10
V = 1/3 x pi x r^2 x h
 1/3 x pi x 2^2 x 3
All of these choices show correct answers!
        
             
        
        
        
That is false 5,000cm is bigger you got this way to go