Question

tan²A–sec²A=. (a)1 (b)0 (c)2 (d)-1 with step by step explanation​

Answer 1

Answer:

(d) -1

Step-by-step explanation:

We know that there is an identity which is sec²A - Tan²A = 1.

Its additive inverse is given in the question.

For example,  if 2 - 1 = 1,     then  1 - 2  = -1.

Exactly opposite symbols if we interchange the numbers.

So tan²A - sec²A = -1