SOLUTION: find the exact value without using a calculator:
A- Cos(2pie/3)
B- Tan5pie/4
C- CSC4pie/3
Algebra.Com
Question 950426: find the exact value without using a calculator:
A- Cos(2pie/3)
B- Tan5pie/4
C- CSC4pie/3
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
find the exact value without using a calculator:
A- Cos(2pi/3)
Reference angle:: pi/3
Quadrant:: QII
Ans: (-sqrt(3)/2)
--------------------
B- Tan(5pi/4)
Reference angle:: pi/4
Quadrant:: QIII
Ans: 1
--------------------
C- CSC(4pi/3)
Reference Angle:: pi/3
Quadrant:: QIII
Ans:: (-2/sqrt(3))
=================
Cheers,
Stan H.
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