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CBSE Class 12-science Answered

Please help me out with this question
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Asked by akshitaasia | 19 Mar, 2018, 11:09: AM
answered-by-expert Expert Answer
begin mathsize 16px style To space find space vector space which space is space perpendicular space of space both space vectors straight a with bar on top equals 4 straight i with hat on top minus straight j with hat on top plus 3 straight k with hat on top space and space straight b with bar on top equals negative 2 straight i with hat on top plus straight j with hat on top minus 2 straight k with hat on top space is straight a with bar on top cross times straight b with bar on top equals open vertical bar table row cell straight i with hat on top end cell cell straight j with hat on top end cell cell straight k with hat on top end cell row 4 cell negative 1 end cell 3 row cell negative 2 end cell 1 cell negative 2 end cell end table close vertical bar equals negative straight i with hat on top plus 2 straight j with hat on top plus 2 straight k with hat on top open vertical bar straight a with bar on top cross times straight b with bar on top close vertical bar equals square root of 1 squared plus 2 squared plus 2 squared end root equals square root of 9 space equals 3 Unit space vector space equals fraction numerator negative straight i with hat on top plus 2 straight j with hat on top plus 2 straight k with hat on top over denominator 3 end fraction Vector space of space magnitude space 9 space is space 9 cross times open parentheses fraction numerator negative straight i with hat on top plus 2 straight j with hat on top plus 2 straight k with hat on top over denominator 3 end fraction close parentheses straight i. straight e. space minus stack 3 straight i with hat on top plus 6 straight j with hat on top plus 6 straight k with hat on top. end style
Answered by Sneha shidid | 19 Mar, 2018, 11:34: AM

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CBSE 12-science - Maths
pls solve
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Asked by sdmbotch1123 | 18 Jan, 2023, 11:01: PM
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CBSE 12-science - Maths
Find the area of a triangle joining the points A(1,1,1), B(1,2,3), and C(2,3,1) as its vertices. The above question is from the vectors chapter. 
Asked by sujaychandramouli | 24 May, 2022, 10:46: AM
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CBSE 12-science - Maths
17th sum plz
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Asked by lovemaan5500 | 07 Feb, 2020, 09:49: AM
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CBSE 12-science - Maths
 using vectors find the area of triangle ABC whose vertices are: A(1,-1,2) B(2,1,-1)AND C(3,-1,2)
Asked by haroonrashidgkp | 02 Nov, 2018, 06:47: PM
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CBSE 12-science - Maths
using vectors find the area of triangle ABC whose vertices are: A(1,1,2)  B(2,3,5) AND C(1,5,5)
Asked by haroonrashidgkp | 02 Nov, 2018, 06:46: PM
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CBSE 12-science - Maths
Please help me out with this question
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Asked by akshitaasia | 19 Mar, 2018, 11:09: AM
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CBSE 12-science - Maths
If , then find .
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Maths
The vectors are the diagonal of a parallelogram. What is the area of the parallelogram?
Asked by Topperlearning User | 13 Aug, 2016, 06:52: PM
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CBSE 12-science - Maths
Find the area of parallelogram whose adjacent sides are given by vector  and .
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Maths
If are two vectors, such that  and  is a unit vector, then find the angle between the vectors .
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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