Derivative of inverse cosine | Taking derivatives | Differential Calculus | Khan Academy

Differential calculus on Khan Academy: Limit introduction, squeeze theorem, and epsilon-delta definition of limits.

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[cepson]

As always, Khan Academy has the go-to video for understanding.

[AMalas]

So d/dx of cos^-1(x)+sin^-1(x) is equal to zero!

[anaonofre]

Bless your soul. I’ve been trying to find this prove

[mikelfrederick]

Would you start writing big words I love your works but I have problem with my eyes am finding difficulties in following.i will appreciate

[michelef]

isn't sin(y) also equal to -sqrt(1-cos^2y)? Why did we pick the principal square root, being the negative a totally legit option?

[helloitsme]

So that means arcsin(x) really is -arccos(x) or is -arccos(x) + some constant?

[xanh]

why can't you just use chain rule? I don't understand