solve trigonometric equation analytically

Mathematics
Tutor: None Selected Time limit: 1 Day

solve trigonometric equation analytically for values of x for 0<=x<2pi

cos^2 x + 2 cos x + 1 = 0

May 10th, 2015

We make a substitution cos x = t

t^2+2t+1=0

(t+1)^2=0

t+1=0

t=-1

So, cos x = -1

Since 0<=x<2pi, then x=pi

May 10th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
May 10th, 2015
...
May 10th, 2015
Dec 5th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer