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## dalesha18 2 years ago nUse the definitions of the trigonometric ratios for a right triangle to derive a cofunction identity for tan(90° - A). Show your steps.

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1. jdoe0001

would you say that tangent = sine/cosine? check your trig identities

2. dalesha18

huh

3. jdoe0001

do you have a trigonometry sheet with basic trigonometric identities?

4. dalesha18

no

5. jdoe0001

hmm, do you have a Unit Circle?

6. dalesha18

lol no

7. wolfe8

Alright so in a right angle triangle, one angle is 90, so the other two would sum up to another 90. If you can rearrange the equation, and apply trigonometry to it, you should get it. It would help to sketch and lable too.

8. jdoe0001

hmmm... so, how are you expected to do that? a magic 8-ball?

9. dalesha18

ooo ok I get it now

10. wolfe8

|dw:1378753879171:dw|

11. dalesha18

hmmmm no I didn't that @jdoe0001

12. dalesha18

anyways thanx @wolfe8

13. wolfe8

No problem hope that helped

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