May 22, 2021 · 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.

Jun 26, 2015 · So the question isn't really why does it only work with radians--it works just as well with degrees except that we get a different definition of the derivative. The reason we prefer …

Mar 6, 2021 · I remember the derivatives of trig functions by naming 3x basic right triangles in a specific way and using ONE simple multiplication. Just wondering if there are similar …

Oct 7, 2020 · Every derivative formula is valid because of a proof. There are proofs of the derivative formulas for trigonometric functions in many sources including this online textbook. …

After a bit of an internet search, I think I have found the correct way to obtain a partial derivative for a trigonometric function but I am not so sure at the same time.

Jul 17, 2020 · I know how to use geometry to find the derivatives of $\sin x$ and $\cos x$ like this: We can use the fact that we know the tangent of the circle to show that $\frac {d} {dx}\cos …

Determine the second derivative of the parametrically defined curve represented by the equations ä (t) = 2 sin (3t) and y (t) = − = −cos (3t). Be sure to place the arguments of any trigonometric …

a) First find the derivative by using Chain Rule. f' (x) = b) Next, we will find the derivative in a different way. Rewrite f (x) without trigonometric functions (Hint: Set up a right triangle with a …

May 28, 2015 · Why is the chain rule applied to derivatives of trigonometric functions? Ask Question Asked 10 years, 5 months ago Modified 4 years, 7 months ago