How do I simplify a radical within a

Delilah Novak 2022-04-18 Answered
How do I simplify a radical within a radical in this half-angle problem?
sin(3π8)=±1+222
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Answers (1)

Ouhamiptkg
Answered 2022-04-19 Author has 18 answers
First, π2<3π8<0 , so we're in the fourth quadrant and thus sine is negative here. Second:
1+222
=2+222
=2+24
=2+22
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