Choose the correct option. Justify your choice. 9 sec^2 A - 9 tan^2 A = 1. 1 2. 9 3. 8 4. 0

Solving, ⇒ 9 sec 2 A - 9 tan 2 A ⇒ 9 (sec 2 A - tan 2 A) By formula, sec 2 A - tan 2 = 1 ⇒ 9 × 1 = 9. Hence, Option 2 is the correct option.

|

Mathematics

1 Like

Solving,

⇒ 9 sec² A - 9 tan² A

⇒ 9 (sec² A - tan² A)

By formula,

sec² A - tan² = 1

⇒ 9 × 1 = 9.

Hence, Option 2 is the correct option.

Answered By

2 Likes