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Using vector, prove that sin(A+B)=sinA...

Using vector, prove that
`sin(A+B)=sinAcosB+cosAsinB`

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BETTER CHOICE PUBLICATION-VECTOR ALGEBRA -PREVIOUS YEARS BOARD.S QUESTIONS FOR PRACTICE (MCQ)
  1. Find the unit vector perpendicular to the vector veca=-hati-2hatj+3h...

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  2. Find the unit vector perpendicular to the vector veca=4hati-3hatj-ha...

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  3. Using vector, prove that sin(A+B)=sinAcosB+cosAsinB

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  4. Find the area of a parallelogram whose adjacent sides are : 3hati-4h...

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  5. Find the area of a parallelogram whose adjacent sides are : 3hati+ha...

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  6. Find the area of parallelogram whose adjacent sides are given by vecto...

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  7. If veca+vecb+vecc=vec0, show that vecaxxvecb=veccxxveca. Interpret the...

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  8. veca=hati-2hatj+3hatk and vecb=2hati+3hatj-5hatk find vecaxxvecb and v...

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  9. Find the angle between two vectors veca and vecb with magnitudes sqrt3...

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  10. The magnitude of the vector 2hati-6hatj-3hatk is :

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  11. Show that the three points with position vectors -2hati+3hatj+5hatk,ha...

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  12. The value of lambda for which the vectors veca=2hati+lambdahatj+hatk ...

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  13. Let veca=4hati+5hatj-hatk,vecb=hati-4hatj+5hatk and vecc=3hati+hatj-ha...

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  14. Find the scalar projection of vecb on veca where : veca=2hati-2hatj+ha...

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  15. If veca=2hati-2hatj+hatk,vecb=hati+2hatj-2hatk and vecc=2hati-hatj+4ha...

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  16. Find the area of the parallelogram whose diagonals are : veca=hati-2ha...

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  17. Find the position vector of a point R which divides the line joining t...

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  18. Find the angle between two vectors vecaand vecb with magnitudes 1 and ...

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  19. Find a vector of magnitude 19, which is perpendicular to both the vect...

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  20. Find a vector of magnitude 7 , which is perpendicular to both the vect...

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