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education/math/MATH1060 (trig)/Angles.md
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@ -5,7 +5,8 @@ If an angle is measured counterclockwise, it's a *positive angle*, and if an ang
## Degrees and Radians ## Degrees and Radians
To convert **from radians to degrees**, multiply the radian value by $\frac{180\degree}{\pi}$. To convert **from radians to degrees**, multiply the radian value by $\frac{180\degree}{\pi}$.
$$ x * \frac{180\degree}{\pi}$$ $$ x * \frac{180\degree}{\pi}$$
To convert **from degrees to radians**, multiply the degree measure by $ To convert **from degrees to radians**, multiply the degree measure by $\frac{\pi}{180\degree}$.
$$ x * \frac{\pi}{180\degree} $$
## Complementary and Supplementary Angles ## Complementary and Supplementary Angles
A **complimentary** angle is formed when two positive angles add up to $90\degree$ or $\frac{\pi}{2}$. One mnemonic device that you can use to remember this is: A **complimentary** angle is formed when two positive angles add up to $90\degree$ or $\frac{\pi}{2}$. One mnemonic device that you can use to remember this is: