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Prove (tantheta+2)(2tantheta+1)=5tanthet...

Prove `(tantheta+2)(2tantheta+1)=5tantheta+2sec^2theta.`

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(tantheta+2)(2 tantheta+1)= ?

Prove that : (tantheta+2)(2tantheta+1)=5tantheta+2sec^(2)theta

costheta(tantheta+2)(2tantheta+1)=?

tantheta-tantheta/2=sectheta/2

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frac(sintheta [(1-tantheta) tan theta+sec^2 theta])((1-sintheta) tantheta(1+tan theta) (sec theta+tantheta)) =?

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