Answer:
tan(5x/8)
Step-by-step explanation:
given expression
![\frac{tan(1/2x)+tan(1/8x)}{1-tan(1/2x)tan(1/8x)}](https://tex.z-dn.net/?f=%5Cfrac%7Btan%281%2F2x%29%2Btan%281%2F8x%29%7D%7B1-tan%281%2F2x%29tan%281%2F8x%29%7D)
Using the trigonometric identity
tan(a+b)= ![\frac{tan(a) + tan(b)}{1-tan(a)tan(b)}](https://tex.z-dn.net/?f=%5Cfrac%7Btan%28a%29%20%2B%20tan%28b%29%7D%7B1-tan%28a%29tan%28b%29%7D)
here a= 1/2x and b=1/8x
putting the values we get
=tan(1/2x+1/8x)
=tan(5/8x)!
Are we supposed to translate then anwser?
Answer:
The answer is "
"
Step-by-step explanation:
The area between two concentrated circles via an exterior circle radius R and an internal circle
![r =\pi(R^2-r^2)](https://tex.z-dn.net/?f=r%20%3D%5Cpi%28R%5E2-r%5E2%29)
The region, therefore, consists of two concentrated circles with radii of 4.5 m and 2.5 m.
![r=\pi(4.5^2 -2.5^2)\\\\](https://tex.z-dn.net/?f=r%3D%5Cpi%284.5%5E2%20-2.5%5E2%29%5C%5C%5C%5C)
![=\frac{22}{7} (20.25-6.25) \\\\ =\frac{22}{7} (14) \\\\=22 \times 2 \\\\ =44 \ m^2](https://tex.z-dn.net/?f=%3D%5Cfrac%7B22%7D%7B7%7D%20%2820.25-6.25%29%20%5C%5C%5C%5C%20%3D%5Cfrac%7B22%7D%7B7%7D%20%2814%29%20%5C%5C%5C%5C%3D22%20%5Ctimes%202%20%5C%5C%5C%5C%20%3D44%20%5C%20m%5E2)