If tany(1+tanx)=1-tanx, show that dy/dx=-1

Prove: sinx + tanx = tanx (1 + cosx) What I have so far: LS: = sinx + tanx = sinx +...

Prove: (tanx)(sinx) / (tanx) + (sinx) = (tanx) - (sinx) / (tanx)(sinx) What I have so far:...

show that: (1-tanx)/(1+tanx)= (1-sinx)/(cos2x)

If tanx = 2/3 tany = 1/2 then tan(x-y) = ?? a.7/4 b.7/6 c.1/8 d.8/6 which answer is corr...

tanx=1/1,tany=1/3 then cos2x=sin2y

Prove: 1-tanx/1+tanx=1-sin2x/cos2x

1-tanx/1+tanx=1-sin2x/cos2x

proof that tanx + secx -1/tanx - secx+1 = 1+sinx/cosx

dy/dx+tanx tany=cosx secy

prove that (tanx + tany) / (cotx + coty) = (tanx)(tany)

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