How do you find the value of tan[(12)cos−1(23)]?
1 Answer
Oct 4, 2015
Explanation:
From the pythagorean identity we have that
Dividing both sides by
Which means that, if we isolate the tangent we have
So for
Since
Putting that back on the formula
Taking the root
Knowing that during the range of the arccosine, the tangent is only negative if the cosine's also negative we have that