Derivatives and integrals of trig functions are easier to remeber when they are remembered in pairs that correspond to each other. Check this out:

1. Derivative of sin x is cos x; the integral of cos x therefore equals sin x +c;

2. Derivative of cos x is -sin x, so the integral of sin x is -cos x +c;

3. Derivative of tan x is sec^{2}x, therefore the integral of sec^{2}x is tan x + c;

4. Derivative of cot x is -csc^{2}x, therefore the integral of csc^{2}x is -cot x +c;

5. Derivative of sec x is sec x * tan x, so we figure out the integral of sec x * tan x would be sec x + c;

6. Derivative of csc x is -csc x * cot x, and so we figure out the integral of csc x * cot x would be -csc x + c.

**Subject :**Math**Topic :**Calculus-
**Posted By :**Jason

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