Question
Download Solution PDFതാഴെ നൽകിയിരിക്കുന്ന പദപ്രയോഗത്തിൽ, (?) ന്റെ സ്ഥാനത്ത് എന്താണ് വരേണ്ടത്?
\(\sqrt{\text {sec}^4 \theta - \text {tan}^4 \theta - \text {tan}^2 \theta}\) × \(\sqrt{\text {cosec}^4 \theta - \text {cot}^4 \theta - \text {cot}^2 \theta}\) = ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFനൽകിയിരിക്കുന്നത്:
\(\sqrt{\text {sec}^4 θ - \text {tan}^4 θ - \text {tan}^2 θ}\) × \(\sqrt{\text {cosec}^4 θ - \text {cot}^4 θ - \text {cot}^2 θ}\) = ?
ഉപയോഗിച്ച സൂത്രവാക്യം:
(1) a4 - b4 = (a2 - b2)(a2 + b2)
(2) sec2θ - tan2θ = 1
(3) cosec2θ - cot2θ = 1
(4) √a × √b = √(ab)
കണക്കുകൂട്ടൽ:
മുകളിലുള്ള സമവാക്യം ഇങ്ങനെ എഴുതാം:
⇒ \(\sqrt{(\text {sec}^4 θ - \text {tan}^4 θ - \text {tan}^2 θ) × (\text {cosec}^4 θ - \text {cot}^4 θ - \text {cot}^2 θ)}\) = ?
സമവാക്യത്തിന്റെ ഇരുവശത്തും വർഗ്ഗമെടുക്കുക.
⇒ (sec4θ - tan4θ - tan2θ) × (cosec4θ - cot4θ - cot2θ) = ?2
⇒ [(sec4θ - tan4θ) - tan2θ] × [(cosec4θ - cot4θ) - cot2θ] = ?2
⇒ [(sec2θ - tan2θ)(sec2θ + tan2θ) - tan2θ] × [(cosec2θ - cot2θ)(cosec2θ + cot2θ) - cot2θ)] = ?2
⇒ [(1)(sec2θ + tan2θ) - tan2θ] × [(1)(cosec2θ + cot2θ) - cot2θ)] = ?2
⇒ [sec2θ + tan2θ - tan2θ] × [cosec2θ + cot2θ - cot2θ)] = ?2
⇒ [sec2θ] × [cosec2θ] = ?2
സമവാക്യത്തിന്റെ ഇരുവശത്തും വർഗ്ഗമൂലമെടുക്കുക
⇒ √[sec2θ × cosec2θ] = ?
⇒ ? = secθ × cosecθ
∴ ആവശ്യമായ ഉത്തരം secθ × cosecθ ആണ്.Additional Information
പരീക്ഷകളിൽ ഏറ്റവും കൂടുതൽ ഉപയോഗിക്കുന്ന സൂത്രവാക്യങ്ങൾ.
സൂത്രവാക്യം പട്ടിക I:
(1) sin2θ + cos2θ = 1
(2) sec2θ - tan2θ = 1
(3) cosec2θ - cot2θ = 1
സൂത്രവാക്യം പട്ടിക II:
(1) sin4θ - cos4θ = (sin2θ - cos2θ)(sin2θ + cos2θ) = (sin2θ - cos2θ)
(2) sec4θ - tan4θ = (sec2θ - tan2θ)(sec2θ + tan2θ) = (sec2θ + tan2θ)
(3) cosec4θ - cot4θ = (cosec2θ - cot2θ)(cosec2θ + cot2θ) = (cosec2θ + cot2θ)
Last updated on Jun 13, 2025
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