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Evaluate |["cos" 15^(@), "sin"15^(@)],["...

Evaluate `|["cos" 15^(@), "sin"15^(@)],["sin" 75^(@), "cos"75^(@)]|`

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|["cos"15^(@), "sin"15^(@)], ["sin"15^(@), "cos"15^(@)]|=?

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What is the value of |{:(cos 15^(@),sin 15^(@)),(cos 45^(@),sin 45^(@)):}|xx|{:(cos 45^(@),cos 15^(@)),(sin 45^(@),sin 15^(@)):}| ?

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MODERN PUBLICATION-DETERMINANTS-OBJECTIVE TYPE QUESTIONS (Very short answer type question)
  1. Evaluate : |{:(-2,3),(4,-9):}|

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  2. |["cos"70^(@), "sin"20^(@)], ["sin"70^(@), "cos"20^(@)]|=?

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  3. Evaluate |["cos" 15^(@), "sin"15^(@)],["sin" 75^(@), "cos"75^(@)]|

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  4. Evaluate : |{:(costheta,-sintheta),(sintheta,costheta):}|

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  5. Evaluate : |{:(x,x+1),(x-1,x):}|

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  6. |(x^(2)-x+1, x-1),(x+1,x+1)|

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  7. If A is a3x3 matrix, |A| != 0 and |3A|=k|A| , then write the value of ...

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  8. Let A be a square matric of order 3\ xx\ 3 . Write the value of 2A ...

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  9. If A and B are square matrices of same order 3 , such that |A|=2 and A...

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  10. Find the co-factor of the element a(23) of the determinant |{:(5,3,5),...

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  11. Write the minor of 6 in |{:(1,2,3),(4,5,6),(7,8,9):}|

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  12. Write the co-factor of 7 in |{:(4,5,6),(5,6,7),(13,15,17):}|

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  13. For what value of x , is the following matrix singular ? [(3-2x,x+1)...

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  14. For what value of x , the matrix [5-xx+1 2 4] is singular?

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  15. For what value of 'x' the matrix [{:(2-x,3),(-5,-1):}] is not invertib...

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  16. Find the adjoint of the following matrices : [{:(2,-1),(4,3):}]

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  17. Find the adjoint of each of the matrices in questions 1 and 2. [{:(1...

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  18. Find the adjoint of the following matrices : [{:(2,3),(1,4):}]

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  19. If A=[{:(3,1),(2,-3):}], then find |adj.A|.

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  20. If A=[(costheta,-sintheta),(sintheta,costheta)] " then " A^(-1) =?

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