Answer:
Since r is the distance from the origin to (x,y), it is the magnitude r=√x2+y2. Alternatively, from the equation (1), one can calculate directly that x2+y2=r2cos2θ+r2sin2θ=r2(cos2θ+sin2θ)=r2.
Step-by-step explanation:
Answer:
4*64=256
256+1=256
there fore 64 1/4 is equivalent to 257/4
The area of the circle is approximately 50
<h3>Areas</h3>
The area of a shape is the amount of space occupied by the shape
<h3>Area of circle</h3>
Given the three radius of the circle, the area of the triangle is calculated using:

From the figure, we have:
--- the radius
So, we have:



Approximate

Hence, the area of the circle is approximately 50
Read more about areas at:
brainly.com/question/10117243
Answer:
b= -1
Step-by-step explanation:
3b-1=b-3
2b - 1 = -3
<u>2</u>b = -2
= -1