Math, asked by magadalshivani86, 8 months ago

The value of SinA+SinB is​

Answers

Answered by mastermind143
0

Answer:

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

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