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Algebra 2 and Trigonometry Regents Cheat Sheet, Cheat Sheet of Algebra

Complet cheat sheet of Algebra 2 and Trigonometry Regents

Typology: Cheat Sheet

2019/2020

Uploaded on 10/09/2020

seshadrinathan_hin
seshadrinathan_hin 🇺🇸

4.5

(14)

5 documents

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Download Algebra 2 and Trigonometry Regents Cheat Sheet and more Cheat Sheet Algebra in PDF only on Docsity!                                     Algebra  2  &  Trigonometry  Regents  Review  Sheet          Regents  Date  (Fill  in):     EQUAL  Roots   IMAGINARY  Roots   2  UNEQUAL  Roots   Solving  Linear/Quadratic  Systems:         1.Set  both  equations  to  “y=”  form.   2.Then  set  both  equations  equal  to   each  other.   3.Solve  the  remaining  quadratic   equation  for  the  x  values.   4.  Substitute  x  back  in  to  find  y  values.     2 2 2 6 5 2 2 7 3 0 (2 1)( 3) 0 1 , 3 2 2.5, 5 x x x x x x x x x y y − + = + − + = − − = = = = = 22 6 5 2 y x x y x = − + − = Absolute  Values     Ex.   Equations:   Set  up  2  cases:     Positive  case  (copy  over  as  is)   Negative  case:  set  =  to  negation  of  each  term    on  the  right     Inequalities:   Set  up  2  cases:     Positive  case  (copy  over  as  is)   Negative  case:  set  =  to  negation  of  each  term    on  the  right   Ex.     2 1 1 2 1 1 2 1 1 2 3 0 x x x x x x x x − = + − = + − = − − = = 2 1 1 2 1 1 2 1 1 2 3 0 0 2 x x x x x x x x x − < + − < + − > − − < > < < Less  than:  arrows  in   towards  each  other   “AND”   Greater  than:  arrows   away  from  each   other  “OR”   *CHECK  all  answers!   Radical  Equations   1.  Isolate  the  radical   2.  Square  BOTH  sides   3.  Solve  for  x.                OR   Solve  GRAPHICALLY!   Left  side  into  Y1,  right  side  into  Y2   Zoom  Standard  (#6)   Wednesday  June  18th,  11am         Arc  Length   = Arc Length = Central angle (in Radians) r = radius S r S θ θ = g   Cofunctions   (sin-­‐cos,  sec-­‐csc,  tan-­‐cot)     Cofunctions  of   Complementary  Angles  are   Equal   Sin  (x)  =  cos  (90  –  x)     Ex.  sec  (2x  +  10)  =  csc  (x  –  40)   2x  +  10  +  x  –  40  =  90   3x  –  30  =  90   3x  =  120   X  =  40   Trig  Graphs   Y  =  a  sin  (bx)  +  c         A  =  amplitude  (dist  from  midline  to  max)   B  =  frequency  (how  many  cycles  occur  0  -­‐  2π)   C  =  midline  (average  of  max  and  min  values)     Period  =  2π/Freq                      Freq  =  2π/Per     Setting  up  your  axes:   X-­‐Axis:  4  tick  marks  spaced  3  boxes  apart   Y-­‐Axis:  3  tick  marks  spaced  2  boxes  apart     π/2,  π,  3π/2,  2π  (same  as  90,  180,  270,  360  deg)     Show  your  work!  List  Amp,  freq,  period  and   midline  for  each  graph.   Label  your  graphs!!!  
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