Question
Mathematics Question on Matrices
If A = [1 −tan α/2tan α/21] and AB=I then B =
A
cos2 α/2 . I
B
cos2 α/2 . AT
C
sin2 α/2 . A
D
cos2 α/2 . A
Answer
cos2 α/2 . AT
Explanation
Solution
The correct answer is (B) : cos2 α/2 . AT.
If A = [1 −tan α/2tan α/21] and AB=I then B =
cos2 α/2 . I
cos2 α/2 . AT
sin2 α/2 . A
cos2 α/2 . A
cos2 α/2 . AT
The correct answer is (B) : cos2 α/2 . AT.