Question

10. Prove that ABBA when :
A-
cos sin
sin cos
and B-
cos sind
sin cos o
11. Show that:
1 2 3
0 1 0
1 0
0 -1 1
2 3 4
- 1 1 0 1 2 3
0-1 1||0 1 0
2 3 3 41 1 0
(N.C.E.R.T
12. Show with the help of an example that AB = 0
whereas RA​

Answer 1

Answer:

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