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Last updated at Feb. 1, 2020 by Teachoo

Transcript

Misc 18 (Introduction) The value of ๐ ฬ.(๐ ฬ ร ๐ ฬ) + ๐ ฬ. (๐ ฬ ร ๐ ฬ) + ๐ ฬ.(๐ ฬ ร ๐ ฬ) (A) 0 (B) โ1 (C) 1 (D) 3 ๐ ฬ ร ๐ ฬ = ๐ ฬ ๐ ฬ ร ๐ ฬ = ๐ ฬ ๐ ฬ ร ๐ ฬ = ๐ ฬ ๐ ฬ ร ๐ ฬ = โ๐ ฬ ๐ ฬ ร ๐ ฬ = โ๐ ฬ ๐ ฬ ร ๐ ฬ = โ๐ ฬ Misc 18 The value of ๐ ฬ.(๐ ฬ ร ๐ ฬ) + ๐ ฬ. (๐ ฬ ร ๐ ฬ) + ๐ ฬ.(๐ ฬ ร ๐ ฬ) (A) 0 (B) โ1 (C) 1 (D) 3 Now, ๐ ฬ.(๐ ฬ ร ๐ ฬ) + ๐ ฬ. (๐ ฬ ร ๐ ฬ) + ๐ ฬ.(๐ ฬ ร ๐ ฬ) = ๐ ฬ.(๐ ฬ) + ๐ ฬ.(โ๐ ฬ) + ๐ ฬ .(๐ ฬ) = ๐ ฬ. ๐ ฬ โ ๐ ฬ . ๐ ฬ + ๐ ฬ. ๐ ฬ = 1 โ 1 + 1 = 1 So, option C is correct ๐ ฬ. ๐ ฬ = |๐ ฬ ||๐ ฬ | cos 0 = 1 ร 1 ร 1 = 1 Similarly, ๐ ฬ . ๐ ฬ = ๐ ฬ . ๐ ฬ = 1

Miscellaneous

Misc 1
Important

Misc 2

Misc 3 Important

Misc 4

Misc 5 Important

Misc 6

Misc 7 Important

Misc 8 Important

Misc 9

Misc 10 Important

Misc 11 Important

Misc 12 Important

Misc 13 Important

Misc 14 Important

Misc 15 Important

Misc 16 Important

Misc 17 Important

Misc 18 Important You are here

Misc 19 Important

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.