单词 | trignometric functions |
释义 | trignometric functions Functions defined in terms of a right-angled triangle (see diagram) and widely used in the solution of many mathematical problems. They are defined as: tangent of angle A, written tanA = a/b where a is the length of the side opposite the angle A, b is the length of the side opposite the angle B, and c is the hypotenuse of the triangle. The reciprocal functions are: cotangent of angle A, written cotA = 1/tanA = b/a ![]() Trigonometric functions |
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