Find all solutions of the equation in the interval of (0, 2π): sin(x+π/4)+sin(x-π/4)=1
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Originally Posted by adam456006 Find all solutions of the equation in the interval of (0, 2π): sin(x+π/4)+sin(x-π/4)=1 From the compound angle formulae: sin(A + B) + sin(A - B) = 2 sin A cos B. In your case B = pi/4. So your equation can be written as a very simple one ....
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