Question

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

Answer 1

Answer:

9sec^2A-9tan2A

9(sec^2A-tan2A)

9 answer [secA-tanA=1]

Answer 2

$\implies$$\large\sf{9 {(sec}^{2} A- {tan}^{2} A) }$

$\implies$$\large\sf{9(1)(As \: {sec}^{2} A- {tan}^{2} A = 1)}$

$\implies$$\large\sf{9}$