Question

Trig general solution question

Answer 1

cosx+cos(-x)=1

Answer 2

This is cos=1/2 which is 60 degrees..but

Answer 3

One of the solutions obviously would be pi/3+2npi

Answer 4

But the 2nd one.. would it be 300 degrees or 120?

Answer 5

what do you mean by "general" all values?

Answer 6

the general solution. it always has two solutions unless it's a quadrantal angle.

Answer 7

that's why it's pi/3+2npi

n=any integer

Answer 8

two is not general, two is specific

Answer 9

are you working in degrees or radians?

Answer 10

radians

Answer 11

ok then you have one answer above
but there is another place on the unit circle where the first coordinate is \(\frac{1}{2}\)
it is in quadrant 4

Answer 12

5pi/3+2npi

Answer 13

yup

Answer 14

but quick question. if this was cos +/- 1/2

Answer 15

which quadrants do I use??

Answer 16

@satellite73

Answer 17

or would it not matter?

Answer 18

@Loser66 Able to solve my question? Just a quadrant question

Answer 19

1,4

Answer 20

If it was cos + or - at 1/2, would it matter what quadrants i choose.?