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  1. -cot x - tan x + c
  2. cot x - tan x + c
  3. cot x + tan x + c
  4. tan x - cot x + c

Answer (Detailed Solution Below)

Option 1 : -cot x - tan x + c
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Detailed Solution

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Concept:

  • cos 2x = cos2 x - sin2 x

Calculation:

= 

= 

= 

= 

= - cot x - tan x + C

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->Indian Airforce Agniveer (02/2026) Notification has been released. Interested candidates can apply between 11th July to 31st July 2025.

->The Examination will be held 25th September 2025 onwards.

-> Earlier, Indian Airforce Agniveer Group X 2025 Last date had been extended.

-> Candidates applied online from 7th to 2nd February 2025.

-> The online examination was conducted from 22nd March 2025 onwards.

-> The selection of the candidates will depend on three stages which are Phase 1 (Online Written Test), Phase 2 ( DV, Physical Fitness Test, Adaptability Test), and Phase 3 (Medical Examination).

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