6 and 12 are the factors.
Given:
The trigonometric equation is:

To find:
The solutions for the given equation over
.
Solution:
We have,

It can be written as


and 
The solutions over
are:
and 
and 
Therefore, the correct option is D.
Answer:
Step-by-step explanation:
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Answer:
x < 6/7
Step-by-step explanation:
Multiply both sides by 3 to get 7x < 6
Divide by 7
x < 6/7