Question
Download Solution PDFযদি sec2 A + tan2 A = \(\frac{4}{{17}}\) হয়, তাহলে sec4 A - tan4 A এর মান কত?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
sec2 A + tan2 A = \(\frac{4}{{17}}\)
অনুসৃত ধারণা:
sec2 A - tan2 A = 1
a2 - b2 = (a + b)(a - b)
গণনা:
⇒ sec4 A - tan4 A = (sec2 A + tan2 A )(sec2 A - tan2 A )
⇒ sec4 A - tan4 A = 4/17 × 1
⇒ sec4 A - tan4 A = 4/17
∴ বিকল্প 3 হল সঠিক উত্তর।
Last updated on Jun 13, 2025
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