1. Use special right triangles to state the value of the 6 trig functions for 30 degrees, 45 degrees and 60 degrees

Guest Mar 24, 2019

#1**+1 **

Look under this online page: **https://en.wikipedia.org/wiki/List_of_trigonometric_identities**

**Look under "Conversions of Common Angles"**

Guest Mar 24, 2019

#2**+1 **

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.

Melody Mar 24, 2019