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Answer:
Step-by-step explanation:
Use the identity
where
and
.
This results in 
From the unit circle we know that
and 
Substitute

Simplify

X=3
Divide both sides of the equation by 2
X^3 =27
Write the number in exponential form with an exponent of 3
X^3=3^3
Since the exponents are the same, set the bases equal
X=3