Your answer is B. because area= length × width.
Rate of change = difference in y values / corresponding difference in x values
For the first function it is (7-6) / (3 - 0) = 1/3
For the second function its the slope of the line rise / run = 2/6 = 1/3
So they are the same
Option C
Answer:
cos(2x) = 2cos²(x)-1
Step-by-step explanation:
We know the trigonometry identity as follows :
cos(2x) = cos²(x) – sin²(x) ....(1)
Also, sin²(x)+cos²(x) = 1
or
sin²(x) = 1-cos²(x)
Put the value of sin²(x) in equation (1)
cos(2x) = cos²(x) – (1-cos²(x))
= cos²(x) –1+cos²(x)
cos(2x) = 2cos²(x)-1
Hence, 2cos²(x)-1 is equal to cos(2x).
The answer would be 4380 more hours.
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