If 60% of A=45% of B and B=x% of A, then which of the following is x equal to?
75
60
50
25
None of these
60% of A=45% of B 60×A=45×B B=6045×A B=133.33% of A ∴x=133.33
If in △ABC 2 cos Aa+cos Bb+2cos Cc=abc+bca= then ∠A is equal to
If A and B are symmetric matrices of the same order and X = AB + BA and Y = AB - BA, then (XY)T is equal to