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[" 59.Given "A=hat i+hat j+hat k" and "B...

[" 59.Given "A=hat i+hat j+hat k" and "B=-hat i-hat j-hat k," then "(A-B)],[" will make angle with "A],[[" (a) "0^(@)," (b) "180^(@)],[" (c) "90^(@)," (d) "60^(@)]]

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