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21 Cards in this Set
- Front
- Back
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acute angle
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less than 90 degrees
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obtuse angle
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greater than 90 degrees but less than 180 degrees
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complimentary angles
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a+B=90
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supplementary angles
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a+B=180
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What is Radian?
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it is the measure of the central angle of a circle subtended by an arc equal in length to the radius of the circle.
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180 degrees equals what radians?
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π radians
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degrees to ragians
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π/180
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radians to degrees
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180/π
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an arc length
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s=rΘ
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formula for the area of a circular sector
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A=1/2r2Θ
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sin t =
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y
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cos t =
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x
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tan t =
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y/x
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csc t =
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1/y
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sec t=
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1/x
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cot t =
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x/y
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domain of sine and cosine
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all real numbers
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domain of tangent secant
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all real numbers except Π/2 + Πn for any integer n
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cotangent cosecant domain
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all real numbers except Πn for any integer n
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even or odd?
cosine and secant |
even
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even or odd?
sine tangent cotangent and cosecant |
odd
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