What is the value of sec2 A - tan2 A?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 1.
Given that
the value of sec2 A - tan2 A
Calculation
⇒ sec2 A - tan2 A
⇒ 1/cos2 A - sin2 A/cos2 A
⇒ (1 - sin2 A)/cos2 A
⇒ cos2 A/cos2 A
⇒ 1