Question

evaluate 9 ( sin square A) + 9 ( cos square A )​

Answer 1

Answer:

9 sec2 A - 9 tan2 A

= 9( sec2 A - tan2 A)

= 9 × 1

= 9

Answer 2

Answer:

9(sin²A+cos²A)

using identity- sin²Ф+cos²Ф=1 we get

⇒9(1)

⇒9

Step-by-step explanation:

hope it helps!