answers
Ratio i.d.: tanθ = - correct answer ✔✔ sinθ/cosθ
Ratio i.d.: cotθ = - correct answer ✔✔ sinθ/cosθ
Reciprocal i.d.: cscθ = - correct answer ✔✔ 1/sinθ
Reciprocal i.d.: secθ = - correct answer ✔✔ 1/cosθ
Reciprocal i.d.: cotθ = - correct answer ✔✔ 1/tanθ
Reciprocal i.d.: sinθ = - correct answer ✔✔ 1/cscθ
Reciprocal i.d.: cosθ = - correct answer ✔✔ 1/secθ
Reciprocal i.d.: tanθ = - correct answer ✔✔ 1/cotθ
Distance Formula - correct answer ✔✔ d=√(x₂-x₁)²+(y₂-y₁)²
Special Right Triangles - correct answer ✔✔ 45°-45°-90° Isoceles-Right triangle
(hyp: a√2 / opp: a / adj: a)
30°-60°-90° Right triangle