Cosine: Cosine (abbreviated as cos)[k? Usain]
Tangent: Tangent (tan)['t? ndnt]
Cotangent: Cotangent? Won't you? ndnt]
Cutting, cutting? nt]
co section:co secant(CSC)[' kau ' si:k? nt]
Positive Vector: versine (abbreviated as Versin) ['v? :sain]
Cosine: the inverse cosine (vercos)['v? :s? :d][k? Usain]
(where the positive vector and the complementary vector are two discarded functions)