## Mpost1994 3 years ago Which of the following equations are identities? cot x = cosx/sinx tanx = 1/cot x cscx = 1/cos x cscx = 1/sec x

1. Mpost1994

@Coolsector

2. Mpost1994

more than one answer as well

3. zugzwang

@NewbieCarrot ??? There is no C, and the third one is not an identity...

4. Mpost1994

i didnt think so ._.

5. zugzwang

Have you found the answer yet?

6. zugzwang

What I used to do was express everything in terms of sine and cosine.

7. UsukiDoll

identities or trigonometric identities?

8. Mpost1994

no ._. and what? it can be as many as apply its not just one

9. UsukiDoll

@Mpost1994 I agree with you on this one. there's more than one answer

10. NewbieCarrot

I believe C is the trig identity.

11. Mpost1994

newbie..you don't know what you are talking about do you ._.

12. nubeer

i think 1st and 2nd one are right.

13. nubeer

C is wrong. cscx = 1/sinx

14. NewbieCarrot

Sorry I messed up.

15. Mpost1994

4?

16. Decart

|dw:1350204471178:dw|

17. Decart

an identity is when the equation is exactly the same on both sides

18. Mpost1994

and uh....is 4 one? ...cru its 4 am ..whatsthe answers ._.

19. Decart

if you look at the drawing i put cos over sin and that is cot

20. Decart

Function Abbreviation Description Identities (using radians) Sine sin opposite / hypotenuse Cosine cos adjacent / hypotenuse Tangent tan (or tg) opposite / adjacent Cotangent cot (or cotan or cotg or ctg or ctn) adjacent / opposite Secant sec hypotenuse / adjacent Cosecant csc (or cosec) hypotenuse / opposite Function Abbreviation Description Identities (using radians) Sine sin opposite / hypotenuse Cosine cos adjacent / hypotenuse Tangent tan (or tg) opposite / adjacent Cotangent cot (or cotan or cotg or ctg or ctn) adjacent / opposite Secant sec hypotenuse / adjacent Cosecant csc (or cosec) hypotenuse / opposite

21. Mpost1994

too tired to think ....guessed at 1 2 and 4 ...its just 1 and 2 ...thnx night.. smh