Is square root 1 minus sine squared theta = cos Θ true? If so, in which quadrants does angle Θ terminate?

Question

anonymous · Answer

I believe the answer is True; quadrants I & IV, can anyone confirm?

ipwnbunnies · Answer

$$\cos^{2}x + \sin^{2}x = 1$$

ipwnbunnies · Answer

That's true for all angles I believe...

ipwnbunnies · Answer

Because the values of cosine and sine will be squared, so the answer will always be positive.

anonymous · Answer

False 

 True; quadrants I & IV 

 True; quadrants II & III 

 True; quadrants I & III
These are my choices.

ipwnbunnies · Answer

Err, not sure what it means when the angle terminates. But that property should work for all angles lol

ipwnbunnies · Answer

Then 'false' would be my answer.