यदि \(\begin{bmatrix} \cos \theta & \sin \theta\\ \sin\theta & \cos \theta \end{bmatrix}\) है, तो |A| का मान क्या है?

  1. sin 2θ 
  2. cos 2θ 
  3. cos2 θ
  4. 1

Answer (Detailed Solution Below)

Option 2 : cos 2θ 
Free
Army Havildar SAC - Quick Quiz
1.9 K Users
5 Questions 10 Marks 6 Mins

Detailed Solution

Download Solution PDF

संकल्पना:

cos2 θ - sinθ = cos 2θ

गणना:

दिया गया है: A = \(\begin{bmatrix} \cos θ & \sin θ\\ \sinθ & \cos θ \end{bmatrix}\) 

|A| = cos θ × cos θ - sin θ × sin θ

= cos2 θ - sinθ

= cos 2θ

Latest Army Havildar SAC Updates

Last updated on Jul 1, 2025

-> The Indian Army has released the Exam Date for Indian Army Havildar SAC (Surveyor Automated Cartographer).

->The Exam will be held on 9th July 2025.

-> Interested candidates had applied online from 13th March to 25th April 2025.

-> Candidates within the age of 25 years having specific education qualifications are eligible to apply for the exam.

-> The candidates must go through the Indian Army Havildar SAC Eligibility Criteria to know about the required qualification in detail. 

More Evaluation of Determinants Questions

More Determinants Questions

Get Free Access Now
Hot Links: teen patti real cash apk teen patti star teen patti online game teen patti cash teen patti club apk