If secA + tanA = 10 and A is acute, find the value of secA - tanA.
Show answer & explanation
Correct answer: A
Explanation
secA + tanA = 10
(secA + tanA)(secA - tanA) = 1
10 × (secA - tanA) = 1
(secA - tanA) = 1 ÷ 10 = 0.1
SSC Selection Post - Graduation Level - 26th July 2025 - Shift 3 • Quantitative Aptitude • Q45
If secA + tanA = 10 and A is acute, find the value of secA - tanA.
Correct answer: A
Explanation
secA + tanA = 10
(secA + tanA)(secA - tanA) = 1
10 × (secA - tanA) = 1
(secA - tanA) = 1 ÷ 10 = 0.1