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নিম্নলিখিত কোনটি প্রদত্ত সমীকরণের ডান পক্ষ?

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RRB Group D 1 Sept 2022 Shift 1 Official Paper
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  1. cosec A
  2. tan A
  3. cos A + 1
  4. sec A + tan A

Answer (Detailed Solution Below)

Option 3 : cos A + 1
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Detailed Solution

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প্রদত্ত:

ধরি,

অনুসৃত সূত্র:

  • sin2A = 1- cos2A
  • a2-b2=(a+b)(a-b)

গণনা:

x =cos A + 1

সুতরাং,

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Latest RRB Group D Updates

Last updated on Jul 18, 2025

-> A total of 1,08,22,423 applications have been received for the RRB Group D Exam 2025. 

-> The RRB Group D Exam Date will be announced on the official website. It is expected that the Group D Exam will be conducted in August-September 2025. 

-> The RRB Group D Admit Card 2025 will be released 4 days before the exam date.

-> The RRB Group D Recruitment 2025 Notification was released for 32438 vacancies of various level 1 posts like Assistant Pointsman, Track Maintainer (Grade-IV), Assistant, S&T, etc.

-> The minimum educational qualification for RRB Group D Recruitment (Level-1 posts) has been updated to have at least a 10th pass, ITI, or an equivalent qualification, or a NAC granted by the NCVT.

-> Check the latest RRB Group D Syllabus 2025, along with Exam Pattern.

-> The selection of the candidates is based on the CBT, Physical Test, and Document Verification.

-> Prepare for the exam with RRB Group D Previous Year Papers.

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