Question

- tan^2x + sec^2x = 1 proving trig equations

Answer 1

see explanation

Explanation:

Using the trigonometric identity

sec²x = 1 + tan²x

Consider the left side

- tan²x + sec²x

= - tan²x + 1 + tan²x ← collect like terms

= 1

= right side, thus proven

Answer 2

Is C

Explanation: