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IF {:|(sinalpha,cosbeta),(cos alpha,sin ...

IF `{:|(sinalpha,cosbeta),(cos alpha,sin beta)|=1/2`, where `alpha and beta` are acute angles then write the value of `alpha + beta.`

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The correct Answer is:
`( 5 pi)/6`
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OSWAAL PUBLICATION-DETERMINANTS-TOPIC-2 SOLUTIONS OF SYSTEM OF LINEAR EQUATIONS (LONG ANSWER TYPE QUESTIONS -II )
  1. IF {:|(sinalpha,cosbeta),(cos alpha,sin beta)|=1/2, where alpha and be...

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  2. If A=((2,-3,5),(3,2,-4),(1,1,-2)) find A^(-1). Use it to solve the sys...

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  3. Solve the following system of equations by matrix method: x+y+z=6,x-...

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  4. Solve the equations x-y+3z=10,x-y-z=-2 and 2x+3y+4z=4 by matrix method...

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  5. Solve by matrix method: x+y+z=6 x-2y+3z=6 x-y+z=2

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  6. Solve by matrix Method: x+2y+3z=2 2x+3y+z=-1 x-y-z=-2

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  7. 2x +3y + 3z =5 , x -2y +z=-4 , 3x - y-2z = 3

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  8. Solve the following system of equation by using matrix method : x+y+...

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  9. Solve the following system of equations by matrix method.3x 2y + 3z= ...

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  10. If A=((2,-3,5),(3,2,-4),(1,1,-2)) find A^(-1). Use it to solve the sys...

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  11. Solve the following system of linear equations by matrix method. x-y...

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  12. The sum of three numbers is 6. If we multiply third number by 3 and...

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  13. If A=[(1,2,-3),(2,3,2),(3,-3,-4)] then find A^-1 and hence solve the f...

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  14. Determine the product [ (-4 4 4), (-7 1 3) and (5 -3 -1)] [(1 -1 1),(...

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  15. Given A=[2 2-4-4 2-4 2-1 5],B=[1-1 0 2 3 4 0 1 2], find BA and use thi...

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  16. IF A={:[(1,2,5),(1,-1,-1),(2,3,-1):}] find A^-1 Hence solve the follow...

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  17. Using matrices, solve the following system of linear equations: x\...

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  18. Solve the following system of equations by matrix method :x+y-z=3 , 2x...

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  19. Using matrices, solve the following system of linear equations: x-y+...

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  20. 3x-4y+2z=-1 2x+3y+5z=7 x+z=2

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  21. If A=[(1,-2,0),(2,1,3),(0,-2,1)] and B=[(7,2,-6),(-2,1,-3),(-4,2,5)] ,...

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