Practicing Success
Practicing Success
CUET Preparation Today
If x is a real quantity, what is the minimum value of (25 cos2x + 9 sec2x). |
30 20 15 40 |
30 |
Formula for minimum value = 2\(\sqrt {ab}\) Here, a = 25, b = 9 Minimum value = 2×\(\sqrt {25×9}\) = 2×15 = 30 |
