Question

the value of 7 tan²A - 7sec²A

Answer 1

With equation 7 tan²A - 7 sec²A we solve that,

→ 7 tan²A - 7 sec²A

→ - (7 sec²A - 7 tan²A)

→ - 7(sec²A - tan²A)

Since sec²A - tan²A = 1 due to identity.

Hence by substituting values we get,

→ 7 tan²A - 7 sec²A = - 7(1)

→ 7 tan²A - 7 sec²A = - 7

Hence the required answer is - 7.

Answer 2

Find that :-

7 tan²A - 7 sec²A

We can take -7 common as written below

-7(sec²A - tan²A )

$\huge{\blue{Using\:\: Identity :-}}$

sec²A - tan²A

= -7(1)

= -7

Hence the required number is - 7