Question

We know that sec²A-tan²A=1 then what is tan²A-sec²A?

Answer 1

The answer for your question is $\large\boxed{\textbf{\textit{-1}}}$

The trigonometric identity used is
${ \sec }^{2}A \: - \: { \tan }^{2}A \: = 1$

For the whole explanation, please check the attachment.

If any doubts, then please put them in the comments.

# $\large\bf\textit{Be \: Brainly}$

Answer 2

Answer:

sec²A+tan²A=1

Step-by-step explanation:

hence prove