Question

3cosx+9=7 slove for x saifoooo help

Answer 1

131.8 another one

Answer 2

plx 73 plz

Answer 3

\[\color{red}{x}\color{blue}{\text{saifoo}}=\cos^{-1}(-\frac{2}{3})\]

Answer 4

I told you how to get the solutions
\[x=\cos^{-1}(\frac{-2}{3})+2n \pi\]
Please ask me what you don't understand about how I got this?
by the way n is an integer

Answer 5

looks like 131.8 degrees if you are working in degrees

Answer 6

hello myininaya!

Answer 7

if you want degrees do +360 n

Answer 8

and put your calc in degree mode for approximations

Answer 9

hey sat

Answer 10

how to get 228.19

Answer 11

i am making truth tables. nothing could be more boring, but i have to do it
t t
t f
f t
f f

arrghhh

Answer 12

is i have to add 180 hhhhhhhhhh i dont know plz help

Answer 13

subtract 131.8 from 360

Answer 14

let me draw a picture

Answer 15

ok

Answer 16

cos(x)=cos(-x)

Answer 17

both those places on the circle have the same first coordinate, that is the same cosine. the first one you can get from the calculator, it is131.8
the other one you get from subtracting 131.8 from 360

Answer 18

\[\cos(131.8)=\cos(-131.8)=\cos(-131.8+360)\]

Answer 19

@myininaya is that a five o-clock shadow you're sporting?

Answer 20

ok thx so ican sub 360 for everythink like thses problems