Select function:
r = a(p + q sin(θ))
r = a(p + q cos(θ))
r = a(p + q tan(θ))
r = a(p + q cosec(θ))
r = a(p + q sec(θ))
r = a(p + q cot(θ))
5
10
15
−5
−10
−15
2
4
6
8
10
−2
−4
−6
−8
−10
−12
0,0
–
o
+
←
↓
↑
→
a = 1.0
p = 1.0
q = 1.0
θ = 0.52
r = 1 + cos ( 0.52
c
) = 1.87