## anonymous one year ago what is tan of 105 degrees?

1. anonymous

Put in calculator tan(105)= -3.73

2. misty1212

HI!!

3. misty1212

my guess is you are supposed to use the addition angle formula writing $$105=60+45$$

4. misty1212

$\tan(60+45)=\frac{\tan(60)+\tan(45)}{1-\tan(60)\tan(45)}$ if i remember that formula correctly

5. anonymous

exactly -3.73205080757

6. misty1212

lol that is not "exact" dear, that is a decimal approximation a good one, but not "exact"

7. anonymous