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1+ sin 2x + cos2x / cOS X + sin x= 2 cos x |
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Answer» Step-by-step explanation: 1+2sinxcosx+cos²x–sin²x/cosx+sinx => 1-sin²x+cos²x+2sinxcosx/cosx+sinx =>2cos²x+2sinxcosx/cosx+sinx =>2COSX(cosx+sinx)/cosx+sinx =>2cosx. ....(PROVED) |
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