Flashcards
Trig Unit
Cards in this deck (17)
- 1Converting between Degrees and RadiansDegrees to radians: pi/180
Radians to degrees: 180/pi - 2Coterminal AnglesClockwise direction: + Pi or 360°
Counterclockwise direction: - Pi or 360°
When asked to find THE coterminal angle use formula:
A + x = 360° - 3How to find the Reference Angles
- 4Formula for Arc LengthC = 2Pi^r
- 5Sector Area FormulaA = 1/2(t)r^2
A = Pi R^2 - 6Terminal angle and initial angelInitial - starting point - 0°
Terminal - finishing point e.g. 90° - 7Sin Cos Tan (sin/cos)0°, 30°, 45°, 60°, 90°
0, 1/2, √2/2, √3/2, 1
1, √3/2, √2/2, 1/2, 0
0, 1/√3, ?,√3, undefined - 8QuadrantsAll Students Take Cake
Quadrant I - All Positive
Quadrant II - All Negative, except sin, csc
Quadrant III - All Negative, except tan, cot
Quadrant IV - All Negative, except cos, sec - 9Sin, Cos and Tan in terms of r,x,ySin y/r
Cos x/r
Tan x/y = sin/cos - 10CosecantSin = y/r
Cosecant = 1/sin = r/y - 11SecantCosine = x/r
Secant = 1/cosine = r/x - 12CotangentTan = y/x
Cotangent = 1/ tang = x/y - 13General Sine Functiony = a sin b (x - c) + d
a = affects amp
b =affects period
c =affects horizontal transition
d =affects vertical transition - 14Steps for Graphing Sine Function1: v. shift - principal axis
2: amplitude
3: period
4: phase shift - 15Principal Axisy = d
Equation: 1/2 (Max + Min) - 16Period2(Pi)/b
b = 2(Pi)/period - 17AmplitudeEquation: 1/2 (Max - Min)
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- Math Flashcards on Trig Unit, created by annahita.brooks on 26/05/2013.
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