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1+sin2x-cos2x/1+sin2x+cos 2x=tan x |
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Answer» Hello buddy.. sin2x / (1+cos2x) = tanx We will use trigonometric identities to solve. We will start from the left side and prove the right side. ==> we know that: sin2x - 2sinx*cosx cos2x = 2cos^2 x -1 I will substitute. ==> sin2x / (1+ cos2x) = 2sinx*cosx / (1+ 2cos^2 x -1) = 2sinx*cosx/ 2cos^2 x We will reduce similar. ==> sin2x / (1+ cos2x) = sinx/cosx But we know that tanx = sinx/cosx ==> sin2x / (1+ cos2x) = tanx........... Hope it helps you buddy hey thnx well I was knowing it but trying the app.... |
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