Question

Confusing math question

Answer 1

There is no value of theta in cos(theta) that would equal 4.
So you are right, it is undefined.

Answer 2

It is not correct.

Answer 3

Your equation equals

\[(sinx+1)(sinx+1)=0\]
Understand how I got that?
And know how to solve this?

Answer 4

Yes, you factored it. I solved it.
It is 3pi/2, right?

Answer 5

Yea, that is the only theta in the interval [0,2pi] where sinx=-1

Answer 6

Are there suppose be two? How about -pi/2?

Answer 7

Interval is [0,2pi]
-2pi is less than 0.

Answer 8

interval is in x

Answer 9

i mean theta lol