Question

find all solutions for 2cosx sinx-cosx=0

Answer 1

we can factor out a cosx

Answer 2

cos(x) (2sin(x)-1) = 0

when cos(x) = 0

when 2sin(x) = 1

Answer 3

these trigs for "all solutions" tend to have to have a n*pi or some such in it to account for the periodicity

Answer 4

0,2pie

Answer 5

i take it that means we got an interval of 0 to 2pi :)

Answer 6

ya

Answer 7

cos(x) = 0, when we are at 90 and 270 degrees

sin(x) = 1/2 when x= 60 and 120 if i remember it right

Answer 8

sin is 30 and 150 .... those always blur together for me

Answer 9

but the answ are pie/6,pie/2,5pie/6,3pie/2

Answer 10

yeah, convert the degrees to radians and your set

Answer 11

can u plz give me the answer in radians

Answer 12

y ai got u thanks