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" 33Prove that: "tan70^(@)=tan20^(@)+2ta...

" 33Prove that: "tan70^(@)=tan20^(@)+2tan50^(@)" ."

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

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

Prove that : tan 70^(@) = tan 20^(@) + 2 tan 50^(@)

Prove that tan 70^@=tan 20^@+2tan50^@

Prove that tan 70^@= tan 20^@+2 tan 50^@ .

Prove that tan 70^@ = tan 20^@ + 2 tan 50^@ .

Prove that tan 70 - tan 20 ^(@)=2 tan 50^(@)

Prove that tan 70^@ = tan 20^@ + 2 tan 50^@ .

Prove that, tan 70^(@) = 2tan 50^(@) + tan 20^(@)

tan10^(@)-tan50^(@)+tan70^(@)