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If sin (A-B) =1 2 , …

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If sin (A-B) =1 2 , cos (A+B)=1 2 0° < ? + ? ≤ 90°, A> ?, Find A and B

Posted by Ravi Kumar 4 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Ishika Garg 4 years, 8 months ago

A+B=120 .................[1 ] A-B =12...................... [2] ___________ 2A = 108 A= 108/2 A= 54 Value of A in eq 2 A-B=12 54-B = 12 -B = 12-54 -B = - 42 - cancelled So B = 42 So value of A =54 B = 42

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