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" no: Prove that "tan70^(@)=cot70^(@)+2c...

" no: Prove that "tan70^(@)=cot70^(@)+2cot40^(@)

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Prove that tan 70^(@)=cot70^(@)+2cot40^(@)

Prove that tan 70^(@)=cot70^(@)+2cot40^(@)

Prove that tan 70^(@)=cot70^(@)++2cot40^(@)

Prove that tan 70^(@)=cot70^(@)++2cot40^(@)

Prove that: tan70^(@)=tan20^(@)+2tan50^(@)

cot70^(@)+4cos70^(@)

Prove that tan70^(@)=2tan50^(@)+tan20^(@) .

Prove that tan70^(@)-tan20^(@)=2tan50^(@) .

Prove that tan70^(@)=2tan50^(@)+tan20^(@)

Prove that tan 70^(@)-tan 20^(@)-2 tan 40^(@)=4 tan 10^(@)