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Question 9 is the question I want to ask you. It is from the Fiitjee package of vectors and of exercise 3.

Ajay Chauhaf , 8 Years ago
Grade 12
anser 1 Answers
sahil
sol: |A.B|=|abcos(¤)| and |A×B|=|absin(¤)| condition is |absin|=|abcos| or |sin|=|cos|where ¤ can tale value from 0 to 180degree.Now only 45 and 135 satisfy so option c is correct(since mod or psistive value is taken so 135 degree also satisfy)
Last Activity: 8 Years ago
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