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OpenStudy (anonymous):
9sin180°+7sec180°+6(sin90°)^2
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OpenStudy (unklerhaukus):
do you know sin 180° ? do you know sin 90° ?
OpenStudy (anonymous):
sin of 90 is 1 right?
OpenStudy (unklerhaukus):
|dw:1347177421878:dw|
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