The least value of $8cosec^2\theta + 25 sin^2 \theta $ is :
Answer & explanation
Correct answer: option 4
a cosec²θ + b sin²θ
minimum value for it = 2\(\sqrt {ab }\)
8 cosec²θ + 25 sin²θ
Minimum value
= 2\(\sqrt {8 × 25 }\)
= 20\(\sqrt {2 }\)
The least value of $8cosec^2\theta + 25 sin^2 \theta $ is :
Correct answer: option 4
a cosec²θ + b sin²θ
minimum value for it = 2\(\sqrt {ab }\)
8 cosec²θ + 25 sin²θ
Minimum value
= 2\(\sqrt {8 × 25 }\)
= 20\(\sqrt {2 }\)