Ask
your own question, for FREE!
Mathematics
20 Online
Solve on the interval [0,2pi): 4 sec x + 6 = -2 A. 2pi/3,4pi/3 B. pi/6,5pi/6 C. pi/3,5pi/3 D. 7pi/6,11pi/6
Still Need Help?
Join the QuestionCove community and study together with friends!
@RaphaelFilgueiras Why?
cos(x)=-1/2
sorry i forget minus
\[4 \sec x + 6 = -2\]\[4 \sec x = -8\]\[\sec x = -2\]\[\frac{1}{\cos x} = -2\]\[\cos x = - \frac{1}{2}\]\[x = \frac{2 \pi}{3}, \frac{4 \pi}{3}\]
pi-pi/3,pi+pi/3
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
laylasnii13:
I need a name for it The weight is heavy, I can't hold. The sun is gone, it's always cold.
minustempo:
When do you go to bed, when do you wake up, and do you feel you get enough sleep?
Tryce:
I just came back after like a month and a half and going back to school in a few
Tryce:
just came back after like a mouth and a half and going back to school in a few da
SummertimeSadness:
Funeral Lace How can I prove the depth of my love for you, When words fall silent in its worth? Instead, I trace this blade's cold steel Across my vulnerabl
Sarahwells:
The undigested food material from the small intestine is received by the? idk the
Subshilava:
Is the NSHSS society worth it because itu2019s coming up to my due date to join o
Subshilava:
Does anyone have recommendations for writing ur college essay I cannot think of a
16 minutes ago
2 Replies
0 Medals
2 hours ago
0 Replies
0 Medals
3 hours ago
6 Replies
0 Medals
17 hours ago
0 Replies
0 Medals
1 hour ago
4 Replies
2 Medals
5 hours ago
4 Replies
0 Medals
5 hours ago
2 Replies
1 Medal
1 day ago
3 Replies
1 Medal