Individual: Prove_formula_on_tangentangle_with_sine_and_cosine

http://www.inter2geo.eu/2008/ontology/GeoSkills#Prove_formula_on_tangentangle_with_sine_and_cosine

Prove_formula_on_tangentangle_with_sine_and_cosine commonName "die Formel tan A = sin A / cos A begründen" (de)
Prove_formula_on_tangentangle_with_sine_and_cosine commonName "die Formel tan A = sin A / cos A beweisen" (de)
Prove_formula_on_tangentangle_with_sine_and_cosine commonName "démontrer tan A = sin A / cos A" (fr)
Prove_formula_on_tangentangle_with_sine_and_cosine created "2009-23-06 04:15:29"
Prove_formula_on_tangentangle_with_sine_and_cosine creator "1"
Prove_formula_on_tangentangle_with_sine_and_cosine modified "2009-28-06 13:51:55"
Prove_formula_on_tangentangle_with_sine_and_cosine hasTopic Cosine
Prove_formula_on_tangentangle_with_sine_and_cosine hasTopic Sine
Prove_formula_on_tangentangle_with_sine_and_cosine hasTopic Tangent_of_angle
Prove_formula_on_tangentangle_with_sine_and_cosine hasTopic Trigonometric_ratio
Prove_formula_on_tangentangle_with_sine_and_cosine type Improve
Prove_formula_on_tangentangle_with_sine_and_cosine type Justify