One way to determine if the function is a trigonometric identity or not is to use a calculator on the choices. Choice A does not fit. Choice B should be (sin x)^2 + (cos x)^2 to become equal to 1. Choice D> should be cot x, the inverse of tan x to become equal to cos x/ sin x. Hence, answer is C>
Answer:
the answer is 0.55555555555
The tangent line to the curve has slope equal to at the point (2, -1). We have, by implicit differentiation,
At the point (2, -1), the slope is then 2/9, so the tangent line has equation
Answer:
2nd choice is correct.
Step-by-step explanation:
We need to find about which polynomial is represented by the algebra tiles.
so we just need to collect all terms written on tiles then combine them.
Notice that - means -1 and + means +1
Row wise terms are:
Now combine like terms:
Hence 2nd choice is correct.
The <em>correct answers</em> are:
Top circle: 34
Bottom left: 9
Bottom right: 21
Explanation:
Let the top circle be x, let the bottom left circle be y, and the bottom right circle be z.
Following the diagram, we have the following equaitons:
x+y = 43
y+z = 30
x+z = 55
Taking the first two equations as a system, we will eliminate y:
We will subtract the bottom equation from the top:
We will now take this and the last equation as a system; this time, we will eliminate z by adding the two equations:
Divide each side by 2:
2x/2 = 68/2
x = 34
Substitute this into the first equation:
x+y = 43
34+y = 43
Subtract 34 from each side:
34+y-34 = 43-34
y = 9
Substitute this into the second equation:
y+z = 30
9+z = 30
Subtract 9 from each side:
9+z-9 = 30-9
z = 21