Answer:
(C) 45°
Step-by-step explanation:
A regular octagon has 8 equal sides.
Therefore, there are 8 minor arcs formed by a regular octagon inscribed in a circle.
The sum of the central angle in a circle is 360 degrees.
Therefore, each minor arc will form an angle of (360/8)=45 degrees.
See the attached diagram for ease of understanding, Hope it helps!
For this case we have the following function:
We must find the value of the function for
We have then:
Rewriting the function we have:
Answer:
The value of g (-5) is given by:
Ab^2 (-bc & +bc would cancel out) but then -ab so the answer would just be ab
Symmetry can be determined visually in a graph. If both graphs are mirror-image of each other, then both of the equations are symmetric. But, you can also determine it analytically through testing the symmetry. These are the rules:
If
f(r, θ) = f(r,-θ), symmetric to the polar axis or the x-axis
f(r, θ) = f(-r,θ), symmetric to the y-axis
f(r, θ) = f(-r,-θ), symmetric to the pole or the origin
Test for symmetry about the x-axis
f(r,θ): r=4 cos3θ
f(r,-θ): r = 4 cos3(-θ) ⇒ r = 4 cos3θ
∴The graph is symmetric about the x-axis.
Test for symmetry about the y-axis
f(r,θ): r=4 cos3θ
f(-r,θ): -r = 4 cos3θ
∴The graph is not symmetric about the y-axis.
Test for symmetry about the origin
f(r,θ): r=4 cos3θ
f(-r,-θ): -r = 4 cos3(-θ) ⇒ r = -4 cos3θ
∴The graph is not symmetric about the origin.
Answer:
9 degrees
Step-by-step explanation:
The temperatire was -3 and then rose by 12, -3 + 12 = 9