If #sin A = 1/3# and 0< A < 90, then what is cos A?
2 Answers
Jun 4, 2018
See below
Explanation:
If
Then using
Then
But if 0< A< 90, then the cosine is positive and
Jun 4, 2018
Explanation:
Since
Consider the right
We are told that
Applying Pythagoras
Now,