# Trigonometry- Something I’ve Learned

I learned that in order to find one of the 3 sides or one of the 2 acute angles in a right triangle, you need at least 2 pieces of information from the question.

To find a side length you need:

1. A given angle
2. A given side
To find an angle you need:
At least 2 given sides

# LateX Coding

Every line of code:

$math expression$

Example 1: exponents

$5^2$

Example 2: two digit exponents

$5^{-1}$

Example 3: fractions

$\frac{3}{4}$

Example 4: change size

$\frac{5^2}{3^2}$

Example 5: adding trig functions (sin, cos, tan)

$\tan\theta=\frac{9}{12}$ $\sin30^\circ=\frac{x}{2}$ $x=\cos^{-1}\frac{3}{4}$