# Expand Using Sum divide Difference Formulas (tan(forty) plus tan(twenty)) divide(one minus tan(forty)tan(twenty))

The angle does not split into two angles where the values of the six trigonometric functions are known. The sum and difference formulas cannot be used.

No solution

The angle does not split into two angles where the values of the six trigonometric functions are known. The sum and difference formulas cannot be used.

No solution

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