Write parametric equations x=-1/2t+6 and y=cos(t) without parameter.
A. y=cos(x)
B. y=cos(-1/2x+6)
C. x=-1/2y+6
D. y=cos(-2x+12)
Which of the given is symmetrical about polar (or x) axis?
A. r=1/2 / 1+2sin(theta)
B. r=16 / 1+4cos(theta)
C. r=16 / 1+sin(theta)
D. r=1 / 1-1/2sin(theta)