Q. Prove that : tan225^@ cot405^@+cot675^@=0

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Prove that : tan 225^@ cot 405^@+ tan 765^@ cot 675^@=0

Prove that tan225^@ cot405^@+tan675^@ cot315^@=2

Prove that: tan75^0+cot75^0=4

Prove that: tan225^(@)cot405^(@)+tan765^(@)cot675^(0)=0

Q.Prove that : tan225^(^^)(Q)cot405^(^^)@+cot675^(^^)@=0

Prove that tan225^(@)cot405^(@)+tan765^(@)cot675^(@)=0

Prove that tan 225^(@) cot 405^(@)+tan 765^(@) cot 675^(@)=0.

Prove that: t a n 225^0cot 405^0+t a n 765^0cot 675^0=\ 0

Prove that: tan75^(@)+cot75^(0)=4

Prove that: tan(-225^0)cot(-405^0)-tan(-765^0)cot(675^0)=0