Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles. Trigonometry is found all throughout geometry, as every straight-sided shape may be ...

In the “classical” adventitious angle problem, for a given set of three angles a, b, and c measured in integral degrees in an isosceles triangle, a fourth angle θ (the derived angle), also measured in ...

This journal, begun in 1943 as Mathematical Tables and Other Aids to Computation, publishes original articles on all aspects of numerical mathematics, book reviews, mathematical tables, and technical ...