Since we are using the unit circle, we need to put the 30-60-90 triangle inside the unit circle.
The radius of the circle is also the hypotenuse of the right triangle and it is equal to 1.
We have already seen in the previous lesson that the leg opposite the 30 degrees angle is half the hypotenuse.
Again, we will find the length of vertical black line of the triangle using the pythagorean theorem.
Since 1/2 = 0.5, we will replace 1/2 with 0.5 in the formula to simplify the computation.
1^{2} = 0.5^{2} + y^{2}Sep 17, 20 03:57 PM
Learn clearly the difference between discrete and continuous data with good examples.
Basic math formulas
Algebra word problems
New math lessons
Your email is safe with us. We will only use it to inform you about new math lessons.