4.11 For the direction cosine matrix 0.086824 -0.77768 0.62264 [Q] -0.49240-0.57682 -0.65178 0.86603 -0.25000 -0.43301 calculate: (a) The classical Euler angle sequence. (b) The yaw, pitch, and roll angle sequence.] {Ans.: (a) a 73.90 B=115.7 y = 136.31 (b) a 276.37 = -38.51 y = 236.40}