1.

यदि `veca = 7hati + hatj - 4hatk "तथा" vecb = 2 hati + 6hatj + 3hatk ` है तब `vecb "पर" veca ` का प्रक्षेप ज्ञात कीजिए |

Answer» Correct Answer - `(8)/(9) `


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