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Unit Circle and Triangles
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Can you name the facts on Unit Circles and Triangles?
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Question
True/False
The radius of a Unit Circle is sometimes 1?
60 degrees is a radian?
Positive angles are spun counter clockwise?
Coterminal and reference angles will always be the same?
-200 degrees is in quadrant 2?
1π radian = 180 degrees?
Sine, cosine, and tangent are all positive in the 4th quadrant?
The inverse cosine of a value will only be in either the 1st or 2nd quadrant of the Unit Circle?
Question
True/False
Area (of a triangle) = 1/2 ab x sinC?
All Angle-Side-Side triangles are impossible triangles?
(sinA)/a = (sinC)/c = (sinB)/b?
If the sides of a triangle are congruent, so are its angles?
There are 100 minutes in a degree?
Tangent=adjacent/opposite?
Reference angles refer to what an angle would be if it 'lived' in the first quadrant?
There is always an angle of at least 80 degrees in a right triangle?
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