Question
Download Solution PDFsec2 54° - cot2 36° +
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFகருத்து:
tan(90° - θ) = cot θ
cot (90° - θ) = tan θ
sec (90° - θ) = cosec θ
cosec2θ - cot2θ = 1
sec2θ - tan2θ = 1
கணக்கீடுகள்:
sec2 54° - cot2 36° +
⇒ sec2 54° - cot2 (90° - 54°) +
⇒ sec2 54° - tan2 54° +
⇒ 1 + 3/2 + 2
⇒ 9/2
மதிப்பு 9/2.
Last updated on Jul 21, 2025
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