The answer has to be less that 100 but more that 80
I went to see if 92 + 93 + 94 would work but the right answer is 89 + 90 + 91 = 270
Hope it helped
No since the between consecutive numbers doesn't give a constant
Answer:
About 64.65 degrees
Step-by-step explanation:
![\tan(x) = \frac{190}{90}](https://tex.z-dn.net/?f=%20%5Ctan%28x%29%20%3D%20%20%5Cfrac%7B190%7D%7B90%7D%20)
![x = { \tan}^{ - 1} \frac{190}{90} = 64.65](https://tex.z-dn.net/?f=x%20%3D%20%20%7B%20%5Ctan%7D%5E%7B%20-%201%7D%20%20%5Cfrac%7B190%7D%7B90%7D%20%20%3D%2064.65)
Make sure your calculator is in degree mode.
The radius is √25=5 in this case.
find the area of each triangles first. (the pentagon can be divided into 5 isosceles triangles)
the two equal sides are 5 each, the angle between them is 360/5=72 degree, so the base side is 2*5*sin36, and the height is 5*Cos36
the area of each triangle is (1/2)*2*5*Sin36*5*Cos36
the total area of the 5 triangles is: 5*(1/2)*2*5*Sin36*5*Cos36
use a calculator: A≈59.44