Question
Download Solution PDF\(\rm \sqrt {\frac{{1 + \cos \theta }}{{1 - \cos \theta }}} + \sqrt {\frac{{1 - \cos \theta }}{{1 + \cos \theta }}} \) = .
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFகொடுக்கப்பட்டது:
\(\rm \sqrt {\frac{{1 + \cos \theta }}{{1 - \cos \theta }}} + \sqrt {\frac{{1 - \cos \theta }}{{1 + \cos \theta }}} \)
பயன்படுத்தப்பட்ட கருத்து:
1. பாவம் θ = 1/கோசெக் θ
2. பாவம் 2 θ + காஸ் 2 θ = 1
3. (a + b)(a - b) = a 2 - b 2
கணக்கீடு:
\(\rm \sqrt {\frac{{1 + \cos θ }}{{1 - \cos θ }}} + \sqrt {\frac{{1 - \cos θ }}{{1 + \cos θ }}} \)
⇒ \(\sqrt {\frac{(1 + \cos θ)^2}{(1 - \cos θ)(1 + \cos θ)}} + \sqrt {\frac{(1 - \cos θ) ^2}{(1 - \cos θ)(1 + \cos θ)}} \)
⇒ \(\sqrt { \frac{(1 + \cos θ)^2}{1 - \cos^2 θ} } + \sqrt {\frac{(1 - \cos θ)^2}{1 - \ விலை^2 θ}} \)
⇒ \(\sqrt { \frac{(1 + \cos θ)^2}{sin^2 θ} } + \sqrt {\frac{(1 - \cos θ)^2}{sin^2 θ}} \)
⇒ \({ \frac{(1 + \cos θ)}{sin θ} } + {\frac{(1 - \cos θ)}{sinθ}} \)
⇒ \({ \frac{(1 + \cos θ + 1 - \cos θ)}{sin θ} }\)
⇒ \({ \frac{2}{sin θ} }\)
⇒ 2 கோசெக் θ
∴ எளிமைப்படுத்தப்பட்ட பதில் 2 cosec θ ஆகும்.
Last updated on Jun 13, 2025
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