1.What's the 2 x 2 matrix that transforms OBCD into parallelogram O'B'C'D' making an angle (theta) with the y-axis?

O=(0,0) B= (1,0) C=(1,1) D=(0,1), OBCD is a unit square. Let theta be an angle with 0≤ theta < pi/2.

2.Find the coordinates of the image points P',Q',R', O' if the letter T is sheared by 15°.?

P= (-1, 2), Q=(0,2), R=(1,2) . The letter "T" consists of the two line segments PR and OQ.