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SSC CGL 2020 Tier-I Official Paper 5 (Held On : 16 Aug 2021 Shift 2)
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  1. sin2θcosθ
  2. sinθcosθ
  3. cosec2θsec2θ
  4. cosecθsecθ

Answer (Detailed Solution Below)

Option 4 : cosecθsecθ
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SSC CGL Tier 1 2025 Full Test - 01
100 Qs. 200 Marks 60 Mins

Detailed Solution

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दिया गया है:

 + 2sinθ cosθ 

सूत्र:

(a + b)2 = a2 + b2 + 2ab

sin2θ + cos2θ = 1

गणना:

 + 2sinθ cosθ 

⇒  × sin2θ +  × cos2θ + 2sinθ cosθ 

⇒  +  + 2sinθ cosθ

⇒  

⇒  = 

⇒  = cosecθ secθ ( = cosecθ,  = secθ) 

∴  + 2sinθ cosθ = cosecθ.secθ

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