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Topic 2E Quiz

Geometry Honors

TermDefinition
θ Theta
Cofunction relationship sinθ = cos(90-θ)
Pythagorean Identity (cosθ)² + (sinθ)²= 1
Tangent Quotient Identity tanθ = sinθ/cosθ
Area of a Triangle 1/2absinC
Law of Cosines c² = a² + b² - 2ab(cosC)
Law of Sines sinA/a = sinB/b = sinC/c
Vector a ray with direction and magnitude
Magnitude the power of a force, represented by the length of the ray
Resultant the resulting vector from combining 2 other forces, the diagonal of the parallelogram formed by the forces drawn from the object to the opposite angle of the parallelogram
sine 0-0, 30-1/2, 45-√2/2, 60-√3/2, 90-1
 



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