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[" (i) "9sec^(2)A-9tan^(2)A" Is equal : ...

[" (i) "9sec^(2)A-9tan^(2)A" Is equal : "],[[" (A) "1," (B) "9]]

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9sec^2A-9tan^2 A is equal to

9 sec^(2) A - 9 tan^(2) A =

9sec^(2)A-9tan^(2)A is equal to (a)1(b)9(c)8 (d) 0

9sec^2A-9tan^2A is equal to (a) 1 (b) 9 (c) 8 (d) 0

4tan^(2)A - 4sec^(2)A is equal to:

9 sec ^ 2 A - 9 tan ^ 2 A = ?

Find the value of 9sec^(2)A-9tan^(2)A

int(sec^(2)x)/(9-tan^(2)x)dx

4 tan^(2) A - 4 sec^(2) A is equal to :

sec^(2)(70^(@))-tan^(2)(70^(@)) is equal to