If sec A - tan A = , then what is the value of sec A + tan A?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 3.
sec2A – tan2A = 1
⇒ (sec A – tan A)(sec A + tan A) = 1
⇒ (1/3) × (sec A + tan A) = 1
⇒ sec A + tan A = 3