Y = cos(x)
sqrt(3)/2 = cos(30º)
dy = -sin(x)*dx
dy = -sin(30º)*(pi/180) = (1/2)*(pi/180)
y + dy = cos(x) - sin(x)dx
y + dy = sqrt(3)/2 - (1/2)*(pi/180) = 0.8573 <span />
It depends on the shape or figure your trying to find it for. Area- the area of a flat or plane figure is the number of unit squares that can be contained in it. Volume- Is the measure of the amount of space in a closed figure.
