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

1. anonymous

lyn can u help me next :3

2. anonymous

False True; quadrants I & IV True; quadrants II & III True; quadrants I & III

3. LynFran

$\cos ^{2}\theta+\sin ^{2}\theta=1$$\cos ^{2}\theta=1-\sin ^{2}\theta$$\cos \theta=\sqrt{(1-\sin ^{2} \theta)}$

4. anonymous

how do i know which quadrant its in?

5. anonymous

@LynFran ^^^

6. LynFran

the 1st and last quadrant

7. LynFran

thats where cos is positive ...

8. anonymous

ohhh ok i see. thanks so so much. hey do you ming helping me with a couple more? you don't have to if you don't want. @LynFran

9. LynFran

so tag me in new post