These functions have the prefix co- in them for a reason: cosine is the sine of the co-angle, cotangent is the tangent of the co-angle, and cosecant is the secant of the co-angle. PROBLEM WITH SPECIAL REFERENCE TO HIGH- SPEED COMPUTERS, by Paul McWilliams. Then the derivatives of $\cos$, $\cot$, and $\csc$ can be memorised with not much more effort. Example 1: Find the derivative of f ( x) (4x3x 2 )(3 2x 2) Since there are two polynomials multiplied by each other, apply the third derivative rule, the Product Rule, to the problem. A COMPACT EVALUATION OF A CIRCULANT AND A SET OF TRIGONOMETRIC IDENTITIES. ![]() You must have learned about basic trigonometric formulas based on these ratios. Here, we have 6 main ratios, such as, sine, cosine, tangent, cotangent, secant and cosecant. Here is a trick I use to remember the derivatives and antiderivatives of trigonometric functions. Differentiation Formulas for Trigonometric Functions Trigonometry is the concept of the relationship between angles and sides of triangles.
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