Knowing that cos(22.5 deg) = (1/2)(square root of 2 + (square root of 2)), find the exact value of sin(22.5 deg)

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter11: Introduction To Trigonometry
Section11.CT: Test
Problem 3CT
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Knowing that cos(22.5 deg) = (1/2)(square root of 2 + (square root of 2)), find the exact value of sin(22.5 deg)

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