一、锐角三角函数 定义：锐角A的正弦(sin)、余弦(cos)、正切(tan)、余切(cot)、正割(sec)和余割(csc)统称为锐角A的三角函数。具体如下： 正弦(sin)：对边比斜边，公式为 sin A = a/c 余弦(cos)：邻边比斜边，公式为 cos A = b/c 正切(tan)：对边比邻边，公式为 tan A = a/b 余切 ...

In mathematics, a bearing is the angle in degrees measured clockwise ... out as you would work out problems with triangles using the sine or cosine rule: ...

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Some standard modules for making 3d shapes with attachment support, and function forms that produce a VNF. Also included are shortcuts cylinders in each orientation and extended versions of the ...

It is generally best if the triangles forming your polyhedron are approximately equilateral ... This algorithm has quadratic run time so it can be slow with very large profiles. The "tangent" method ...

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Practise recognising degrees of accuracy ... The three trigonometric ratios; sine, cosine and tangent are used to calculate angles and lengths in right-angled triangles. The sine and cosine ...