Question
Download Solution PDFसमीकरण cot2x cot3x = 1 के लिए 0
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFव्याख्या:
दिया गया है
cot2x. cot3x = 1
⇒ cos2x. cos3x - sin2x.sin3x= 0
⇒ cos(2x+3x) = cos5x = 0 0
इसलिए 5x =
⇒ x =
इस प्रकार, केवल पाँच हल संभव हैं
∴ सही उत्तर विकल्प C है
Last updated on Jul 8, 2025
->UPSC NDA Application Correction Window is open from 7th July to 9th July 2025.
->UPSC had extended the UPSC NDA 2 Registration Date till 20th June 2025.
-> A total of 406 vacancies have been announced for NDA 2 Exam 2025.
->The NDA exam date 2025 has been announced. The written examination will be held on 14th September 2025.
-> The selection process for the NDA exam includes a Written Exam and SSB Interview.
-> Candidates who get successful selection under UPSC NDA will get a salary range between Rs. 15,600 to Rs. 39,100.
-> Candidates must go through the NDA previous year question paper. Attempting the NDA mock test is also essential.