Question
Download Solution PDF8 sec² ∅ + 2 cosec² ∅ এর সর্বনিম্ন মান কত?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF8 sec² ∅ + 2 cosec²∅
⇒ 8(1 + tan²∅) + 2(1 + cot²∅)
⇒ 8 + 2 + 8 tan²∅ + 2 cot²∅
a tan²∅ + b cot²∅ এর সর্বনিম্ন মান = 2√ab
⇒ 10 + 2√(8 × 2)
⇒ 10 + 2√16 = 18
a sec2θ + b cosec2θ এর জন্য সর্বনিম্ন মান,
⇒ (√a + √b)2
প্রশ্ন অনুসারে,
⇒ (√8 + √2)2
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