Q. 4 A4.4( 182 Votes )

Choose the correct option. Justify your choice.


A. 1

B. 9

C. 8

D. 0

Answer :

Following is the explanation:


9 sec2 A – 9 tan2 A


= 9 (sec2 A – tan2 A)


= 9 x 1


= 9

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