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OpenStudy (anonymous):
find the value of sin^2 π/12, without using calculator. Thanks.
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ganeshie8 (ganeshie8):
use the double angle formula
ganeshie8 (ganeshie8):
\(\cos 2\theta = 1-2\sin^2\theta\)
OpenStudy (anonymous):
got it! thanks!!!
ganeshie8 (ganeshie8):
np :)
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