Question

Q5. Find the value of : 9 sec² A - 9 tan² A 1 9 -1 -9​

Answer 1

Answer:

We have, 9sec

2

A−9tan

2

A

Let r=9sec

2

A−9tan

2

A

r=9(sec

2

A−tan

2

A)

We know that

sec

2

A−tan

2

A=1

Therefore,

r=9×1=9

Step-by-step explanation:

please Mark me

Answer 2

Answer:

Hence, 42 tiles are needed in this case.