Question

Find the values of 9 sec^2 A -9 tan^2 A

Answer 1

9 sec² A -9 tan² A

solution;

9 sec² A -9 tan² A

=9(sec²A-tan²A)

use this formula below

since, sec²A-tan²A=1

=9(1)

=9

the values of 9 sec^2 A -9 tan^2 A=9

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