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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

is not a special angle, however and
are. And , so we can use this formula:
where and :
Multiply top and bottom by
Rationalize the denominator:
=
.
Check by using your calculator.
Then find the decimal value for
So it checks.
So the answer is

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