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Answer
Solution
To find the exact value of
given that
and
, we can use the tangent subtraction formula:
Substituting the given values:
Multiply both sides by the denominator to eliminate the fraction:
Expand the left side:
Bring all terms involving
to one side and constant terms to the other:
Combine like terms:
Solving for
:
Answer:
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Extra Insights
To find the exact value of
, we can use the formula for the tangent of a difference of angles:
We know that
and
. Let
. Plugging in these values into the formula, we have:
Cross-multiplying gives:
Expanding both sides results in:
Now, multiply the entire equation by 3 to eliminate the fraction:
Now, we can move the terms involving
to one side and the constant terms to the other side:
This simplifies to:
Thus, we find
:
Therefore, the exact value of
is: