SOLUTION: Find the exact value of the trigonometric function.
cos -23π /6
Algebra.Com
Question 643562: Find the exact value of the trigonometric function.
cos -23π /6
Found 2 solutions by solver91311, lwsshak3:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
would be two full trips around the unit circle backwards, so
is 
short of 2 trips around backwards and therefore is equivalent to forwards.
Look up )
John
My calculator said it, I believe it, that settles it
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Find the exact value of the trigonometric function.
cos -23π /6
**
Visually, this means you are rotating clockwise π/6 short of 2 revolutions (24π/6) which places the reference angle of π/6 in quadrant I where cos>0
cos -23π /6=√3/2
RELATED QUESTIONS
Find the exact value of the trigonometric function at the given real number.
(a) cos (answered by ewatrrr)
Find the exact value of the trigonometric function at the given real number.... (answered by ewatrrr)
Use the sum or different to find he exact value of each trigonometric function
a) (answered by lwsshak3)
Given sin 30°= 1/2, use trigonometric identities to find the exact value of:
A: cos 60°
(answered by Edwin McCravy)
Use an Addition or Subtraction Formula to write the expression as a trigonometric... (answered by lynnlo)
I have to find the exact value for this trigonometric expression. Help? :(
cos^-1 (cos... (answered by fractalier,Cromlix)
using periodic properties of trigonometric function, find the exact value of the... (answered by Fombitz)
Find the exact value of the trigonometric function at the given real number.... (answered by ewatrrr,rothauserc)
Find the exact value of the trigonometric function at the given real number.
(a)... (answered by ewatrrr)
