Question 3
? Question
Write a function to represent the point (x, y) rotated 90° counterclockwise about the origin.
VO
(0) 101
0²
Vo 4
R(x,y) =
=
II
V
> < 2
IV
元
α β ε 9
A P P 6
sin cos tan sin costan
csc sec cot log logo In
||
D
1
1o a
ZA
}