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OpenStudy (abbles):
Can someone explain questions 3 and 4 please?
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OpenStudy (abbles):
zepdrix (zepdrix):
Q3 and Q4? :O But it looks like you got them right >.<
zepdrix (zepdrix):
What's the Tangent Half-Angle Identity? Something like this, right?\[\large\rm \tan\left(\frac{x}{2}\right)=\frac{\sin x}{1+\cos x}\]
zepdrix (zepdrix):
|dw:1469157630245:dw|
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