9.9sec^(2)A-9tan^(2)A" बराबर है : "

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

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

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

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

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

If 10 sec^(2)x - 9tan^(2)x= 13 and 0^@le x lt 90^@ then x = _____

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(sec∅ - tan∅)^2 (1 + sin∅)^2 ÷ sin^(2)∅ =? (sec∅ - tan∅)^2 (1 + sin∅)^2 ÷ sin^(2)∅ बराबर है :

Choose the correct option Justify your choice : 9sec^(2)A-9tan^(2)A=….

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