Posted by suvaion on Thursday, February 16, 2012 at 9:56am.
Without a calculator, find the exact value of csc20° − cot 40° , showing work.

math  Bosnian, Thursday, February 16, 2012 at 11:15am
In google type :
csc20° − cot 40°
When you see list of result click on :
What is csc(20)  cot(40)? or csc(pi/9)  cot(2pi/9)
You will see solution step by step.