Cos- - 4-xcos- - 4-y-sin- - 4-xsin- - 4-y-sin x-y

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Implicit Differentiation

cosπ / 4-xcos...

Question

cos{π/4 - x}cos{π/4 - y} - sin{π/4 - x}sin{π/4 - y} = sin(x+y)

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Similar questions

cos (\frac{π}{4} - x) cos (\frac{π}{4} - y) - sin (\frac{π}{4} - x) sin (\frac{π}{4} - y) = sin (x + y)

cos (\frac{π}{4} - x) cos (\frac{π}{4} - y) - sin (\frac{π}{4} - x) sin (\frac{π}{4} - y) = sin (x + y)

cos (\frac{π}{4} - x) cos (\frac{π}{4} - y) - sin (\frac{π}{4} - x) sin (\frac{π}{4} - y) = sin (x + y)

cos (\frac{π}{4} - x) cos (\frac{π}{4} - y) - sin (\frac{π}{4} - x) sin (\frac{π}{4} - y) = sin (x + y)

cos (\frac{π}{4} - x) cos (\frac{π}{4} - y) - sin (\frac{π}{4} - x) sin (\frac{π}{4} - y)

cos A cos B - sin A sin B = cos (A + B)

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