Some key definitions:
<u>Reflexive property:</u> angles, line segments, shapes are congruent to themselves. Its easier to think of a shape: if you have a circle, then this circle is equal to itself.
<u>Symmetric property:</u> you can interchange the equal signs of an equation. So think of a=b is the same as b=a, its just the same thing written in a different order.
<u>Transitive property:</u> If a=b, and b=c, then a=c. Basically think of it as a=b=c, all of these variables are the same as each other.
So for the first clue, you have the reflexive property.
The second clue is the symmetric property.
The third clue is the transitive property.
lateral area = 2 X pi X r X H
= 2 x 3.14 x 5 x 9 = 282.6
Answer:
x=5
Step-by-step explanation:
Yes you are right. This does involve more trig that physics. So let's review the math for a bit.
Cos(2x) = cos^2(x) - sin^2(x) Substitute 1 - sin^2(x) for cos^2(x)
Cos(2x) = 1 - sin^2(x) - sin^2(x)
cos(2x) = 1 - 2*sin^2(x) Now we need to solve for sin^2(x)
2sin^2(x) = 1 - cos(2x)
sin^2(x) = (1 - cos(2x))/2
Now all we need do is make a few substitutions.
x = ωt
Substitute (1 - cos(2ωt))/2 for sin^2(ωt)
P = (Io)^2 *R * (1 - cos(2ωt))/2
P = (Io)^2*R/2 - (Io)^2*R cos(2ωt) / 2
I think if you follow it carefully, you will find that the answer is
B <<<<< Answer.