If A + B = 90°, and sin A = 5/13, then what is cos B?
Show answer & explanation
Correct answer: A
Explanation
Given:
A + B = 90°
sin A = 5/13
By the formula:
A + B = 90°
cos B = sin A
cos B = 5/13
SSC CGL - 26 Sep 2025 - Shift 3 • Quantitative Aptitude • Q67
If A + B = 90°, and sin A = 5/13, then what is cos B?
Correct answer: A
Explanation
Given:
A + B = 90°
sin A = 5/13
By the formula:
A + B = 90°
cos B = sin A
cos B = 5/13