Let's check.
x = 5π/24
4x = 5π/6
cos 4x = cos(5π/6) = cos 150° = -√3/2
cos² 4x = (-√3/2)^2 = 3/4
4 cos² 4x -3 = 4 (3/4) - 3 = 0
Answer: TRUE
Answer:
There are 35 adult dogs and 20 puppies
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Step-by-step explanation:
<em>Represent the puppies with P and the Adult dogs with A</em>
Given

Dogs = 55
Required
Determine A and P
First, we need to sum the ratios;



Adult Dogs is then calculated as follows;




Puppies is calculated by subtracting the number of adult dogs from the total



<em>Hence;</em>
<em>There are 35 adult dogs and 20 puppies</em>
Answer:
m = - 1/4
Step-by-step explanation:
When two line is perpendicular to each other the product of them is - 1
So let the other line be B
Gradient of B = t
Gradient of A = 4

therefore m = - 1/4
The answer might be Y=1/4x+2