Use the Special Right Triangle to evaluate sin 45°, cos 45° and tan 45°. Your answers should be exact (not a decimal). In other words in your answers use radicals as √2, √3, etc

Question

Use the Special Right Triangle to evaluate sin 45°, cos 45° and tan 45°. Your answers should be exact (not a decimal).   In other words in your answers use radicals as √2, √3, etc

anonymous · Answer

@jdoe0001 ?

anonymous · Answer

This is the 1:1:√2 triangle.

jdoe0001 · Answer

do you happen to have a Unit Circle?

anonymous · Answer

no

jdoe0001 · Answer

well, then maybe is what you need :)l, you can find many online, and 45 degrees is quite common, as you can see @Numb3r1  already knew t he value :)

anonymous · Answer

It's a "special triangle", the other well-known one is 30-60-90 and has sides 1:√3:2.

anonymous · Answer

Gotcha

jdoe0001 · Answer

http://www.mathwarehouse.com/geometry/triangles/right-triangles/images/picture-45-45-90-special-right-triangle.gif

jdoe0001 · Answer

or this one better http://grockit.com/blog/collegeprep/files/2011/04/35.png