Question

sinA + sinB = ????
this this question guys​

Answer 1

What is the value of SinA+sinB=?

SinA+ sinB =2[{sin(A+B)/2}{ cos(A-B) /2}]

proof:

sin(X+Y) + sin(X-Y) = 2(sinXcosY)

let X + Y = A

and X - Y = B

=> X = (A + B)/2 & Y = (A - B)/2

By Substituting, we obtain the following equation

sinA+ sinB =2[{sin(A+B)/2}{ cos(A-B) /2}].

Hope this helps

Answer 2

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sinA + sinB = ????

$\huge{\mathfrak{\red{Answer}}}$

=>>

$sin \: a + sin \: b \: = 2 (\frac{sin \: a + b}{2} )( \frac{cos \: (a - b)}{2} )$

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