Math, asked by Rupeshdon07, 6 months ago

FIND THE DETERMINANT.

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Answers

Answered by blitz18

3

Answer:

1/2

Det = cos50°cos10° -sin10°sin50°

=cos ( 50+10)

[Because

cos(x)cos(y)- sin(x) sin(y) = cos(x+y) ]

= cos60°

= 1/2

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