1.

ngARSwerQuestionslypeove that b2-t:Board Term-1, 2015, Set-NJQzQBNI

Answer»

i) Take out a^2b^2 common you get

a^2b^2( sec^x - tan^2x)

= a^2b^2 because ( sec^x - tan^2x) =1

Not understand



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