Hyperbolic Trigonometric Identity: cosh(x-y)

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  • matheasysolutions reply I don't always derive the hyperbolic trig identity for cosh(x - y) but when I do I usually use the identity for cosh(x + y) that I solved earlier ;) View Video Notes on Steemit: https://steemit.com/mathematics/@mes/m2tao-video-notes-hyperbolic-trigonometric-identity-cosh-x-y #GetOnSteem
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