# cos x = sqrt(3)/2

• October 9th 2012, 08:59 AM
Petrus
cos x = sqrt(3)/2
Determine all solutions to the trigonometric equation
https://webwork.math.su.se/webwork2_...8665fb6a61.png
in the range 0,2pi

i alredy got the first answer it is pi/6
but the second i thought i would do pi/6+2pi =S? plz help need fast help!
• October 9th 2012, 09:16 AM
Plato
Re: cos x = sqrt(3)/2
Quote:

Originally Posted by Petrus
Determine all solutions to the trigonometric equation
https://webwork.math.su.se/webwork2_...8665fb6a61.png
in the range 0,2pi

i alredy got the first answer it is pi/6

What about $2\pi-\frac{\pi}{6}~?$
• October 9th 2012, 09:18 AM
Petrus
Re: cos x = sqrt(3)/2
solved it :P can some1 explain for me this
for tan its x+kpi
what is it for sin?
• October 9th 2012, 09:18 AM
Petrus
Re: cos x = sqrt(3)/2
solved it 11pi/6 :)