Question
Download Solution PDFtan 15° + cot 15° এর মান নির্ণয় করুন
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFগণনা:
cot15° + tan15°
⇒ (cos15°/sin15°) + (sin15°/cos15°)
⇒ (cos215° + sin2 15°)/(sin15° cos 15°) (Sin2θ + cos2θ = 1)
⇒ 1/(sin15° cos15°)
সমীকরণটিকে 2 দ্বারা গুণ ও ভাগ করুন
⇒ 2/(2 sin15° cos15°) (2 sinθ cosθ = sin2θ)
⇒ 2/sin30° (sin30° = 1/2)
⇒ (2/1/2) = 2 x 2
⇒ 4
∴ সঠিক বিকল্প হল বিকল্প 1
Last updated on Jul 21, 2025
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