Mathematics · Vector Algebra identities
सदिशों (vectors) a और b के संबंध में निम्नलिखित में से कौन सा गणितीय कथन सत्य है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 1यदि a और b इकाई सदिश हैं और उनके बीच का कोण θ है, तो cos(θ/2) = (1/2)|a - b|
- 2यदि |a + b| = |a - b| ⇒ a और b लंबवत (perpendicular) नहीं हैं
- 3(a × b) 2 = (a) 2 (b) 2 + (a · b) 2
- 4(a × b) 2 = (a) 2 (b) 2 - (a · b) 2✓
सही उत्तर देखें
(a × b) 2 = (a) 2 (b) 2 - (a · b) 2
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Start Free Mock Test →Preparing for Mathematics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice Vector Algebra identities MCQs →Want more practice questions on Vector Algebra identities?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Mathematics · Vector Algebra identities