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## RonnyDeKoning 3 years ago Calculate: cot 15° - tan 15°

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1. Skaematik

|dw:1353260851083:dw|

2. Skaematik

|dw:1353261103061:dw|

3. RonnyDeKoning

I also tried that, but what is your solution then?

4. Skaematik

what is your answer? I'm really tired and its 4:54am here.

5. RonnyDeKoning

The sample is $(2 \sqrt{3})\div3$

6. Skaematik

did you type the question correctly? I'm not getting (23√)÷3 as the answer to cot15-tan15.

7. RonnyDeKoning

It's in degree right?

8. Skaematik

@RonnyDeKoning if you solve what i had above you will get 2root3. Which is the answer.

9. RonnyDeKoning

Sorry, i just looked in my book, the correct answear is $2\sqrt{3}$, sorry, can you show me how you got it?

10. RonnyDeKoning

|dw:1353263259028:dw|

11. RonnyDeKoning

That is for tan, how get cot is it 1/ tan?

12. Skaematik

it is a trigonometric identity

13. RonnyDeKoning

No Geometry, and you have to calculate it.

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