„Hornafræði“: Munur á milli breytinga

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Ekkert breytingarágrip
Ekkert breytingarágrip
Lína 4:
Hornafallareglur:
 
{{col-start}}
:<math>\sin(x + y) = \sin(x) * \cos(y) + cos(x) * sin(y)</math>
{{col-2}}
:<math>\sin(x - y) = \sin(x) * cos(y) - cos(x) * sin(y)</math>
:<math>\cossin \left(x + y\right) =\sin x \cos(x) *y + \cos(y) -x \sin(x) *y, sin(y)\,</math>
:<math>\cos \left(x - +y\right) = \cos( x) *\cos cos(y) +- \sin( x) *\sin sin(y), \,</math>
{{col-2}}
:<math>\sin \left(x + -y\right) = \sin( x) * \cos( y) +- \cos( x) *\sin sin(y), \,</math>
:<math>\cos \left(x-y\right)=\cos x \cos y + \sin x \sin y. \,</math>
{{col-end}}
 
:<math>sin^2(x) + cos^2(x) = 1</math>