SOLUTION: cos(pi/10) = cos (-pi/10) How do i show this to be true. Explain
Algebra.Com
Question 665901: cos(pi/10) = cos (-pi/10) How do i show this to be true. Explain
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
cos(pi/10) = cos (-pi/10) How do i show this to be true. Explain
-----------
Use the unit circle, or plot the terminal points on the x-y plane.
RELATED QUESTIONS
i got 2n(pi) +or- pi/3 and 2n(pi) +or- pi as solutions for the equation cos x+cos 2x=0.... (answered by josgarithmetic)
so how do i solve Cos(3x + pi/5) = 0.5?
(answered by Alan3354)
i must find the exact value of six trig functions of pi/4 radians.
sin pi/4 csc... (answered by stanbon,CharlesG2)
Hey, Tutor
Thanks for taking the time to help me. I have a few questions about graphing... (answered by ikleyn)
How to solve... (answered by thesvw,ikleyn)
Use DeMoivre's Theorem to find the indicated power of the complex number: [1/2(cos pi/10... (answered by user_dude2008)
I have calculated this:
cos(-x)= -1/2
cos(x)= 1/2
x=60 degrees + 2 pi
Above... (answered by Alan3354)
Use DeMoivre's Theorem to find the indicated power of the complex number. Write the... (answered by rapaljer)
Can you help me solve this expression in order to find out where it is true?
{{{... (answered by Boreal)