(cosec θ - sin θ) (sec θ - cos θ) (tan θ + cot θ) चे मूल्य काय आहे?

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SSC CPO 2024 Official Paper-I (Held On: 29 Jun, 2024 Shift 1)
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  1. 1
  2. sec θ cosec θ
  3. 3
  4. -3

Answer (Detailed Solution Below)

Option 1 : 1
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SSC CPO : General Intelligence & Reasoning Sectional Test 1
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दिलेल्याप्रमाणे:

(cosec θ - sin θ) (sec θ - cos θ) (tan θ + cot θ) ची किंमत काढा.

वापरलेले सूत्र:

आपण त्रिकोणमितीय ओळख वापरून व्यंजनाचे सरलीकरण करू.

गणना:

(cosec θ - sin θ) (sec θ - cos θ) (tan θ + cot θ)

आपण प्रत्येक पद वेगळे सरलीकृत करूया:

cosec θ - sin θ = (1)/(sin θ) - sin θ

sec θ - cos θ = (1)/(cos θ) - cos θ

tan θ + cot θ = (sin θ)/(cos θ) + (cos θ)/(sin θ)

ती एकत्र जोडा:

⇒ ((1)/(sin θ) - sin θ) ((1)/(cos θ) - cos θ) ((sin θ)/(cos θ) + (cos θ)/(sin θ))

पुढील सरलीकरण:

⇒ ((1 - sin2 θ)/(sin θ)) ((1 - cos2 θ)/(cos θ)) ((sin2 θ + cos2 θ)/(sin θ cos θ))

चल sin2 θ + cos2 θ = 1 वापरून:

⇒ ((cos2 θ)/(sin θ)) ((sin2 θ)/(cos θ)) ((1)/(sin θ cos θ))

⇒ (cos2 θ)/(sin θ) x (sin2 θ)/(cos θ) x (1)/(sin θ cos θ)

⇒ (cos2 θ x sin2 θ)/(sin θ x cos θ x sin θ x cos θ)

⇒ (cos2 θ x sin2 θ)/(sin2 θ x cos2 θ)

⇒ 1

∴ योग्य उत्तर पर्याय (1) आहे.

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