Question #fb399
2 Answers
Assuming
Now from here all we need to do is take the square root of both sides,
Remember that because we will be taking the inverse tangent we will need to apply the proper restrictions on its domain and range.
Knowing this we can gather that the answers for when
Explanation:
Either one of the factor should be zero
a.
Divide both sides by cos x (condition
Trig table and unit circle give -->
b.
Divide both sides by cos x.