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OpenStudy (anonymous):
√2 cos(pi/4-x)=....
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OpenStudy (kc_kennylau):
\(\sqrt2\sin x\)
OpenStudy (anonymous):
what the formula? teach me please
OpenStudy (cwrw238):
cos (pi/4 - x) = sin x pi/4 = 90 degrees i diagram should help: |dw:1385038800041:dw|
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