How do I simplify a radical within a

Delilah Novak

Delilah Novak

Answered question

2022-04-18

How do I simplify a radical within a radical in this half-angle problem?
sin(3π8)=±1+222

Answer & Explanation

Ouhamiptkg

Ouhamiptkg

Beginner2022-04-19Added 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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