Question

Need help....
Solve each equation in the interval from 0 to 2pi. Round your answer to the nearest hundredth.

cos(π θ) = - 0.10

Answer 1

Please help me

Answer 2

you can use a calc?

Answer 3

Tell me how to do that

Answer 4

What numbers to use

Answer 5

acos(-0.10)

Answer 6

that is pi*theta

Answer 7

you will have two solutions in ths interval

Answer 8

Well.. i got 1.670964...

Answer 9

I don't understand, somebody help

Answer 10

Type into your calculator: cos^(-1)=-.10

Answer 11

You should get 1.67 radians.

Answer 12

yes, I got that,

Answer 13

That is 1.47 radians less than pi radians.

Answer 14

What how did you get 1.47

Answer 15

pi radians is 3.14 radians. Subtract 1.67 from 3.14

Answer 16

Ok

Answer 17

Therefore there is another angle in Quadrant III that has the same cosine and its value is 3.14 radians + 1.47 radians.