Find the exact value of the expression.
-$$\frac { 1 - \tan 80 ^ { \circ } \tan 70 ^ { \circ } } { \tan 80 ^ { \circ } + \tan 70 ^ { \circ } }$$
A) $\sqrt { 3 }$
B) $\frac { \sqrt { 3 } } { 3 }$
C) $- \sqrt { 3 }$
D) $- \frac { \sqrt { 3 } } { 3 }$

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The Answer of Find the exact value of the expression.
-$$\frac { 1 - \tan 80 ^ { \circ } \tan 70 ^ { \circ } } { \tan 80 ^ { \circ } + \tan 70 ^ { \circ } }$$
A) $\sqrt { 3 }$
B) $\frac { \sqrt { 3 } } { 3 }$
C) $- \sqrt { 3 }$
D) $- \frac { \sqrt { 3 } } { 3 }$

Find the Exact Value of the Expression 1−tan⁡80∘tan⁡70∘tan⁡80∘+tan⁡70∘\frac { 1 - \tan 80 ^ { \circ } \tan 70 ^ { \circ } } { \tan 80 ^ { \circ } + \tan 70 ^ { \circ } }tan80∘+tan70∘1−tan80∘tan70∘​

Find the Exact Value of the Expression $\frac { 1 - \tan 80 ^ { \circ } \tan 70 ^ { \circ } } { \tan 80 ^ { \circ } + \tan 70 ^ { \circ } }$