Cos(-θ) = Cosθ By trigonometric identity.
<span>Cos(-360) = Cos360
</span>
Cos360 = 1
Area of rectangle is 168![mm^2](https://tex.z-dn.net/?f=mm%5E2)
Step-by-step explanation:
Given,
Base = 14mm
Perimeter = 52mm
We will find length first to calculate area of rectangle.
Let l be the length of rectangle.
As we know,
Perimeter = 2(length + base)
52=2(l+14)
![Dividing\ both\ sides\ by\ 2\\\frac{52}{2}=\frac{2}{2}(l+14)\\26=l+14\\Subtracting\ 14\ from\ both\ sides\\l+14-14=26-14\\l=12mm](https://tex.z-dn.net/?f=Dividing%5C%20both%5C%20sides%5C%20by%5C%202%5C%5C%5Cfrac%7B52%7D%7B2%7D%3D%5Cfrac%7B2%7D%7B2%7D%28l%2B14%29%5C%5C26%3Dl%2B14%5C%5CSubtracting%5C%2014%5C%20from%5C%20both%5C%20sides%5C%5Cl%2B14-14%3D26-14%5C%5Cl%3D12mm)
Now,
Area of rectangle= Length * Base
![Area\ of\ rectangle = 14*12\\Area\ of\ rectangle= 168\ mm^{2}](https://tex.z-dn.net/?f=Area%5C%20of%5C%20rectangle%20%3D%2014%2A12%5C%5CArea%5C%20of%5C%20rectangle%3D%20168%5C%20mm%5E%7B2%7D)
Area of rectangle is 168![mm^2](https://tex.z-dn.net/?f=mm%5E2)
Keywords: Area, Rectangles
Learn more about areas at:
#LearnwithBrainly
Numbers with only two factors are called prime numbers.
Step-by-step explanation:
The values of a, b, and c determine the shape and position of the parabola. The domain of a function is the set of all real values of x that will give real values for y. The range of a function is the set of all real values of y that you can get by plugging real numbers into x. The quadratic parent function is y = x2.