Respuesta :
Answer:
see explanation
Step-by-step 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:
see explanation
Step-by-step 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