in an acute triangle if sin(a+b-c)=1/2and cos(b+c-a)=1/
Asked by hasin mahsool | 29th Sep, 2013, 10:38: AM
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
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 Faiza Lambe | 29th Sep, 2013, 06:27: PM
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