From ae2df8eb0e6f0a222066a863e434e44eea6b01d4 Mon Sep 17 00:00:00 2001 From: zleyyij <75810274+zleyyij@users.noreply.github.com> Date: Wed, 18 Sep 2024 12:02:12 -0600 Subject: [PATCH] vault backup: 2024-09-18 12:02:12 --- education/math/MATH1060 (trig)/Identities.md | 18 ++++++++++++++++++ .../math/MATH1060 (trig)/The Unit Circle.md | 13 ------------- education/math/MATH1060 (trig)/Untitled.md | 0 3 files changed, 18 insertions(+), 13 deletions(-) create mode 100644 education/math/MATH1060 (trig)/Identities.md delete mode 100644 education/math/MATH1060 (trig)/Untitled.md diff --git a/education/math/MATH1060 (trig)/Identities.md b/education/math/MATH1060 (trig)/Identities.md new file mode 100644 index 0000000..bddedb2 --- /dev/null +++ b/education/math/MATH1060 (trig)/Identities.md @@ -0,0 +1,18 @@ +# Trigonometric Identities + +All of the following only apply when the denominator is not equal to zero. + +$$ tan \theta = \frac{y}{x} $$ +Because the following are inverses of their counterparts, you only need to remember the equivalents for $sin$, $cos$, and $tan$, then just find the inverse by taking $1/v$. + +| Identity | Inverse Identity | +| ------------------------------- | ------------------------------ | +| $$ sin\theta = y $$ | $$ csc\theta = \frac{1}{y} $$ | +| $$ cos\theta = x $$ | $$ sec \theta = \frac{1}{x} $$ | +| $$ tan\theta = \frac{sin\theta} | | +$$ cot \theta = \frac{x}{y} $$ +$$ sec\theta = \frac{1}{cos\theta}$$ +$$ csc\theta = \frac{1}{sin\theta}$$ +# Pythagorean Identities +The Pythagorean identity expresses the Pythagorean theorem in terms of trigonometric functions. It's a basic relation between the sine and cosine functions. +$$ sin^2 \theta + cos^2 \theta = 1 $$ diff --git a/education/math/MATH1060 (trig)/The Unit Circle.md b/education/math/MATH1060 (trig)/The Unit Circle.md index 38919e4..37bb832 100644 --- a/education/math/MATH1060 (trig)/The Unit Circle.md +++ b/education/math/MATH1060 (trig)/The Unit Circle.md @@ -26,19 +26,6 @@ Finding a reference angle: | 2 | $180\degree - \theta$ | | 3 | $\theta - 180\degree$ | | 4 | $360\degree - \theta$ | -## Other Trigonometric Functions -All of the following only apply when the denominator is not equal to zero. - -$$ tan \theta = \frac{y}{x} $$ -Because the following are inverses of their counterparts, you only need to remember the equivalents for $sin$, $cos$, and $tan$, then just find the inverse by taking $1/v$. -$$ sec \theta = \frac{1}{x} $$ -$$ csc = \frac{1}{y} $$ -$$ cot \theta = \frac{x}{y} $$ - -## The Pythagorean Identity -The Pythagorean identity expresses the Pythagorean theorem in terms of trigonometric functions. It's a basic relation between the sine and cosine functions. -$$ sin^2 \theta + cos^2 \theta = 1 $$ - # Definitions | Term | Description | diff --git a/education/math/MATH1060 (trig)/Untitled.md b/education/math/MATH1060 (trig)/Untitled.md deleted file mode 100644 index e69de29..0000000