Prove that ( tan 90 = frac { 2 tan 45 } { 1 - tan ^ { 2 } 45 } )

Click here:point_up_2:to get an answer to your question :writing_hand:prove that tan 90 frac 2 tan 45 1
Click here👆to get an answer to your question ✍️ -Prove that - tan 90 - frac - 2 tan 45 - - 1 - tan - - 2 - 45 -

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Evaluate without using trigonometric table: displaystyle frac{{cos e{c^2}left( {{{90}^ circ } - theta } right) - {{tan }^2}theta }}{{4left( {{{cos }^2}{{48}^ circ + }{{cos }^2}{{42}^ circ }} right)}} - frac{{2{{tan }^2}{{30}^ circ }{{