Sin(x-y)/sin(x)cos(y)
= 1 - cot(x)tan(y)...
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Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?
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An object in geometry with no width, length or height is a(n):
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Mr. rose asked his students to draw a quadrilateral with 4 unequal sides. draw an example of this kind of quadrilateral.
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