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Maths-

General

Easy

Question

In $straight triangle A B C comma sum a left parenthesis sin space B minus sin space C right parenthesis equals$

0
1
$\frac{1}{2}$
2R

hint Hint:

In this question, we have to find the value of $sum a left parenthesis sin space B minus sin space C right parenthesis$ . For this we will sine rule.

The correct answer is: 0

$B y space sin space r u l e comma space fraction numerator sin space A over denominator a end fraction equals fraction numerator sin space B over denominator b end fraction equals fraction numerator sin space C over denominator c end fraction equals k sum a left parenthesis sin space B minus sin space C right parenthesis equals a left parenthesis sin space B minus sin space C right parenthesis plus b left parenthesis sin space C minus sin space A right parenthesis plus c left parenthesis sin space A minus sin space B right parenthesis equals a left parenthesis b k minus c k right parenthesis plus b left parenthesis c k minus a k right parenthesis plus c left parenthesis a k minus b k right parenthesis equals a b k minus a c k plus b c k minus a b k plus a c k minus b c k equals 0$

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