-π/2 < arctan(x) < π/2
So cos(π/2) < cos(arctan(x)) < cos(0)
0 < cos(arctan(x)) < 1
About A. 25 grams because glasses are really not heavy at all and the other options are way too illogical.
Hope this helps!
Hey! So, here's a tip. When writing exponents, an easier way is to write a^b, rather than a to the b power. Besides that, here is your answer!
So-------
9^3=729
3^2=9
6^3=216
15^2=225
Now that we have that figured out, we can add them together, wish is simple. 729 + 9 + 216 + 225= 1,179.
Therefore, your final answer will be 1,174.
If you have any questions on this, I'm happy to help you. :)
Cos -2x or -cos2x, it's the difference.
Answer:
pretty sure its B and C
Step-by-step explanation:
because they have a common multiplier of 2.5 and are similar triangles
18 x 2.5 = 45
20 x 2.5 = 50
