Select function:
r² = a sin(bθ)
r² = a cos(bθ)
r² = a tan(bθ)
r² = a cosec(bθ)
r² = a sec(bθ)
r² = a cot(bθ)
1
2
3
−1
−2
−3
0.5
1
1.5
2
−0.5
−1
−1.5
−2
0,0
–
o
+
←
↓
↑
→
a = 1.0
b = 1.0
θ = 0.52
r = √(cos(0.52
c
)) = 0.93