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## DominiRican1013 one year ago Which of the following equations are identities? Check all that apply.

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1. DominiRican1013

$A. \cot^2x+\csc^2x=1$ $B. \tan^2x=\sec^2x-1$ $C. \sin^2x=1-\cos^2x$ $D. \sin^2x-\cos^2x=1$

2. DominiRican1013

I know for sure it is not D.

3. DominiRican1013

@welshfella

4. Mertsj

Do you know the Pythagorean Identities?

5. DominiRican1013

I do the ones that I think are right is B and D but I am not too sure

6. Mertsj

B & C

7. DominiRican1013

oh okay thank you. so D is not correct

8. Mertsj

$\sin ^2+\cos ^2=1$

9. Mertsj

no

10. DominiRican1013

aorry I did not mean to say D lol

11. DominiRican1013

Thank you

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