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Put p=q=r=1 1=y+z 1=z+x 1=x+y Find =(x/1+x)+(y/1+y)+(z/1+z) ==X+y+z/x+y+z==1

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Put A=60,B=30,C=0 Ans=D

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Solution

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A=2 satisfied 2^2-4/√2=0

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(√a -1)(a+1)=3 Then find (a²-4)/√a

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CosA=3/√10 Cos2A=9/5-1=4/5 Cos4A=7/25 Sin4A=24/25 Sin8A=2*24*7/625==336/625 Credit = @L_earner

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Tana=1/3 Sina=1/√10 Sin2a =2sinacosa 2*1/√10*3/√10 3/5 Sin4a=2sin2acos2a 2*3/5*4/5=24/25 Sin8a=2*24/25*7/25= 336/625

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