diff --git a/education/math/MATH1220 (calc II)/Integration with Trig Identities.md b/education/math/MATH1220 (calc II)/Integration with Trig Identities.md index c31cc1b..80ddc53 100644 --- a/education/math/MATH1220 (calc II)/Integration with Trig Identities.md +++ b/education/math/MATH1220 (calc II)/Integration with Trig Identities.md @@ -58,10 +58,20 @@ $$ \int\frac{3}{4+x^2}dx = \frac{3}{2}\arctan(\frac{x}{2}) + C $$ # A VERY LARGE LIST OF TRIG IDENTITIES FOR CALCULUS -| non calc identities
| +| Reciprocal | | ------------------------------------ | | $\csc(x) = \dfrac{1}{sin(x)}$ | | $\sec(x) = \dfrac{1}{\cos(x)}$ | | $\cot(x) = \dfrac{1}{\tan(x)}$ | -| $\tan(x) = \dfrac{\sin(x)}{\cos(x)}$ | + +| Quotient | +| -- | +| $\tan(x) = \dfrac{\sin(x)}{\cos(x)}$ | +| $\cot(x) = \dfrac{\cos(x)}{\sin(x)}$ | + +| Pythagorean | +| -- | | $\sin^2(x) + \cos^2(x) = 1$ | +| $1 + \tan^2(x) = \sec^2(x)$ | +| $1 + \cot^2(x) = \csc^2(x)$ | +| $1 \ No newline at end of file