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(costheta+sintheta)^2+(costheta-sintheta...

`(costheta+sintheta)^2+(costheta-sintheta)^2=`

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(1+costheta+sintheta)/(1+costheta-sintheta)=(1+sintheta)/costheta .

(1+costheta+sintheta)/(1+costheta-sintheta)=(1+sintheta)/(costheta)

If costheta:sintheta=1:2 , then find the value of (8costheta-2sintheta)/(4costheta+2sintheta)

If cos(2theta)=0" then "|{:(0,costheta,sintheta),(costheta,sintheta,0),(sintheta,0,costheta):}|^2="............"

The solution of the equation |(costheta,sintheta,costheta),(-sintheta,costheta,sintheta),(-costheta, -sintheta,costheta)|=0 is -

If costheta[(costheata, sintheta), (-sintheta, costheta)]+sintheta[(x, -costheta), (costheta, x)]=I_(2) . Find x.

Prove that sintheta/(1+costheta)+sintheta/(1-costheta)=2/sintheta .

prove that- (sintheta+1-costheta)/(costheta-1+sintheta)=(1+sintheta)/costheta