SSC CGL 2023 PYQ — Question 72

SSC CGL - 20 July 2023 - Shift 4 • Quantitative Aptitude • Q72

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