prove that sinA -cos A / sinA + cos A + sinA +cos A /sin A -cos A = 2/2sin a square A-1 2sunA- cos A + sinA + cos A=2​

prove that sinA -cos A / sinA + cos A + sinA +cos A /sin A -cos A = 2/2sin a square A-1 2sunA- cos A + sinA + cos A=2​

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