If x is a real quantity, what is the minimum value of (25 cos2x + 9 sec2x).
Answer & explanation
Correct answer: option 1
Formula for minimum value = 2\(\sqrt {ab}\)
Here, a = 25, b = 9
Minimum value = 2×\(\sqrt {25×9}\) = 2×15 = 30
If x is a real quantity, what is the minimum value of (25 cos2x + 9 sec2x).
Correct answer: option 1
Formula for minimum value = 2\(\sqrt {ab}\)
Here, a = 25, b = 9
Minimum value = 2×\(\sqrt {25×9}\) = 2×15 = 30