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ABC ত্রিভুজ থেকে প্রমাণ কর যে, a2sin2B-sin2C+b2sin2C-sin2A+c2sin2A-sin2B=0

Created: 1 year ago | Updated: 1 year ago

a2sin2B-sin2c+b2sin2c-sin2A+c2sin2A-sin2B

=14R2a2b2-c2+b2c2-a2+c2a2-b2=0 Proved

1 year ago

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AB=3x-4x2x-2xx<... td>0-x-xxx2x-2x2x5x-4x3x7x-5x

=x3-42-210-1-11 .x 12-225-437-5=x2100010001 =x2000x2000x2

অনুরূপভাবে, BA=x2000x2000x2 

অতএব, AB = BA

অতএব,  x2I1x2A =B-1 I B-1=B-1=Ax2=3x-4x2x-2x1x0-1x-1x1x 

অতএব, B-1=Ax2

 

 

1 year ago

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