Question
Download Solution PDFসরল করুন:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFধারণা:
a2 - b2 = (a - b) (a + b)
sec x = 1/cos x এবং cosec x = 1/sin x
a3 + b3 = (a + b) (a2 + b2 - ab)
গণনা :
⇒
⇒
⇒
⇒
⇒
⇒ sin A
∴ সঠিক উত্তরটি হল বিকল্প (1)
Last updated on Jun 18, 2025
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