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in an acute triangle if sin(a+b-c)=1/2and cos(b+c-a)=1/

Asked by hasin mahsool 29th September 2013, 10:38 AM
Answered by Expert
Answer:

Given, sin (A + B C) =   and cos (B + C A) =

 

From angle sum property of triangle, we have,

 

On subtracting (2) from (1), we get

 

On putting value of C in (1), we get

A + B = 105 ....... (3)

Adding (2) and (3), we get

 

On putting value of B in (2), we get

 

Answered by Expert 29th September 2013, 6:27 PM
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