# Math Help - question on trigonometry

1. ## question on trigonometry

Hi all

question on triangometry .

Attachment 29044
I know solve this quetion put are we saying :
tan = 6/6.7 = 0.8955
or tan =6/6.7 =0.0156
I don't n did we take tan or direct divide 6/6.7 = 0.8955

2. Originally Posted by r-soy
I know solve this quetion put are we saying :
tan = 6/6.7 = 0.8955
or tan =6/6.7 =0.0156
Fisrtly, you cannot have tan by itself. You have to have tan of something.

You know that the tangent rule for a right angle triangle is $\tan{\theta} = \frac{opposite}{adjacent}$

That means $\theta = \tan^{-1}\left(\frac{opposite}{adjacent}\right)$

Do you understand?

3. thanks a lot