Determine the position vectors of the rotated triangle:
A triangle ABC, which contain three points A [3 - 1], B [4 1] and C [2 1], is rotated by 90o around the origin in counter clockwise direction. Determine the position vectors of the rotated triangle.
Solution
Transformation for rotation is,
φ = 90o.
∴ 
Figure
By Using 3 × 2 matrix containing coordinates of the vertices of the triangle. The result generates the position vectors of the rotated triangle.
