1. Use special right triangles to state the value of the 6 trig functions for 30 degrees, 45 degrees and 60 degrees
Look under this online page: https://en.wikipedia.org/wiki/List_of_trigonometric_identities
Look under "Conversions of Common Angles"
+118608 As you know, they are both right angled triangles.
For 45 degree ratios use a right angles isosceles triangle where the 2 equal sides are both 1 unit.
Find the hypotenuse using pythagoras's theorem and then read off the ratio values from it.
For both 60degrees and 30degrees.
Start with a equilateral triangle with side length 2 units.
Then cut it in half to get two congruent triangles, you will only use one of them.
it has a right angle, a 30degree angle and a 60 degree angle,
the hypotenuse is 2 units and one side is 1 unit.
Use pyth to find the 3rd side and that is it.
