Question

I'm weak in trigonometry...

plz help me find ans 2 tiz​

Answer 1

$9se {c}^{2} A- 9 {tan}^{2} A \\ 9(se {c}^{2}A - {tan}^{2} A) \\ 9(1) \\ 9$

Identity used

$1 + {tan}^{2} A = se {c}^{2} A$

Answer 2

Answer:

9

Step-by-step explanation:

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

= 9 (1) as Sec^2 A - Tan^2 A = 1

=9