Math, asked by Teranosaurus, 10 months ago

Why on earth 2sinA cosB = sin (A + B) + sin (A - B)?

Answers

Answered by harshvalaki

2

Answer:

PROOF:

Step-by-step explanation:

sin(A+B) = sinAcosB + cosAsinB

sin(A-B) = sinAcosB - cosAsinB

Adding both of them you get:

2sinAcosB

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