\(\rm \left[\frac{\cos 50^\circ}{1+\sin 50^\circ}\right]+\left[\frac{1+\sin 50^\circ}{\cos50^\circ}\right]\) चे मूल्य काढा:

This question was previously asked in
RRB Technician Grade III Official Paper (Held On: 28 Dec, 2024 Shift 1)
View all RRB Technician Papers >
  1. 2 cosec 50°
  2. 2 sec 50°
  3. 2 cot 50°
  4. 2 tan 50°

Answer (Detailed Solution Below)

Option 2 : 2 sec 50°
Free
General Science for All Railway Exams Mock Test
2.1 Lakh Users
20 Questions 20 Marks 15 Mins

Detailed Solution

Download Solution PDF

दिलेले आहे:

आपल्याला याचे मूल्य काढायचे आहे: \(\rm \left[\frac{\cos 50^\circ}{1+\sin 50^\circ}\right]+\left[\frac{1+\sin 50^\circ}{\cos50^\circ}\right]\)

वापरलेले सूत्र:

cos² θ + sin² θ = 1

गणना:

\(\rm \left[\frac{\cos 50^\circ}{1+\sin 50^\circ}\right]+\left[\frac{1+\sin 50^\circ}{\cos50^\circ}\right]\)

दोन्ही पदांचा लसावि घ्या:

\(\frac{cos² 50° + (1 + sin 50°)² }{(1 + sin 50°) × cos 50°}\)

अंशाचा विस्तार करू:

cos² 50° + (1 + 2sin 50° + sin² 50°)

cos² θ + sin² θ = 1 हे नित्यसमीकरण वापरून:

1 + (1 + 2sin 50°)

2 + 2sin 50°

आता, समीकरण असे होईल:

\(\frac{2 + 2sin 50°}{(1 + sin 50°) × cos 50°}\)

अंशातून 2 बाहेर काढूयात:

\(\frac{2(1 + sin 50°)}{(1 + sin 50°) × cos 50°}\)

(1 + sin 50°) हे समान पद काढून टाकूयात:

2 / cos 50°

1 / cos 50° चे मूल्य sec 50° आहे.

म्हणून, समीकरण असे सरलीकृत होते: 2 sec 50°

∴ दिलेल्या समीकरणाचे मूल्य 2 sec 50° आहे.

Latest RRB Technician Updates

Last updated on Jun 30, 2025

-> The RRB Technician Notification 2025 have been released under the CEN Notification - 02/2025.

-> As per the Notice, around 6238 Vacancies is  announced for the Technician 2025 Recruitment. 

-> The Online Application form for RRB Technician will be open from 28th June 2025 to 28th July 2025. 

-> The Pay scale for Railway RRB Technician posts ranges from Rs. 19900 - 29200.

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

-> Candidates can go through RRB Technician Syllabus and practice for RRB Technician Mock Test.

Get Free Access Now
Hot Links: teen patti game paisa wala teen patti live teen patti casino teen patti rules teen patti bliss