Answer:
Second answer
Step-by-step explanation:
We are given and . What we have to find are and .
First, convert to via trigonometric identity. That gives us a new equation in form of :
Multiply both sides to get rid of the denominator.
Then divide both sides by -3 to get .
Hence,
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Next, to find , convert it to via trigonometric identity. Then we have to convert to via another trigonometric identity. That gives us:
It seems that we do not know what is but we can find it by using the identity for .
From then .
Therefore:
Then use the surd property to evaluate the square root.
Hence,
Now that we know what is. We can evaluate which is another form or identity of .
From the boxed values of and :-
Then rationalize the value by multiplying both numerator and denominator with the denominator.
Hence,
Therefore, the second choice is the answer.
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Summary
Let me know in the comment if you have any questions regarding this question or for clarification! Hope this helps as well.