Question
Download Solution PDFযদি cos θ - sin θ = 0 হয়, তাহলে (sin8 θ + cos8 θ) এর মান হবে:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত
cos θ - sin θ = 0
ব্যবহৃত ধারণা
cos θ = sin θ = 1/√2 (θ = 45°)
গণনা
cos θ - sin θ = 0
cos θ = sin θ (θ = 45°)
(sin8 θ + cos8 θ) = sin8 θ + sin8 θ
⇒ 2sin8 θ
⇒ 2(1/√2)8
⇒ 2/16
= 1/8
উত্তর হল 1/8.
Last updated on Jul 22, 2025
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