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Find the area of the triangle formed by O,A,B where :
`vec OA= hat i+ 2 hat j+ 3 hat k`, `vec OB = -3 hat i- 2 hat j+ hat k`

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PRADEEP PUBLICATION-VECTORS-EXERCISE
  1. Find the area of the parallelogram having two adjacent sides OA and OB...

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  2. Find the area of triangle PQR where P,Q,R have respectively coordinate...

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  3. Find the area of the triangle formed by O,A,B where : vec OA= hat i+ ...

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  4. Find the area of the triangle formed by O,A,B where : vec OA= 3 hat i...

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  5. If vec axx vec b= vec cxxvec d and vec axx vec c= vec bxxvec d, show t...

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  6. Find the area of the triangle ABC where A,B,C are the points (a,0,0), ...

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  7. Find the area of the triangle having the points A(1,1,1), B(1,2,3) and...

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  8. If vec a= 2 hat i+ hat j- hat k, vec b= -hat i+ 2 hat j- 4 hat k and v...

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  9. Calculate the product ((hat i- 2 hat j+ 3 hat k) cross (2 hat i+ hat j...

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  10. If vec a= hat i- 2 hat j+ hat k, vec b= 2 hat i - hat j+ hat k and vec...

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  11. Define the vector product of two vectors vec a and vec b. If vec a = 2...

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  12. If vec a= 2 hat i+ 5 hat j- 7 hat k, vec b= -3 hat I + 4 hat j+ hat k ...

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  13. If G is the centroid of triangle ABC, prove that area triangle AGB = ...

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  14. If D, E, f are the mid-point of the sides of triangle ABC, prove that ...

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  15. Using vectors prove that sin(alpha - beta)= sin alpha cos beta- cos al...

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  16. If vec a= 2 hat i+ 3 hat j+ 6 hat k, vec b= 3 hat i- 6 hat j+ 2 hat k ...

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  17. If vec a+ vec b + vec c= 0, show that vec axxvec b= vec bxx vec c= vec...

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  18. Integrate the following int xSin(2x)dx

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  19. Prove the following : vec a * (vec a xx vec b) = 0, where are vec a a...

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  20. Integrate the following int dx/(1+cosecx)

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