146 week 12.notebook
November 16, 2016
toa=opp/adj
146 week 12.notebook
November 16, 2016
Q4:
sin(2x) = 2(­3)/(10)= ­.6
cos(2x)=(1/10)­(9/10)= ­.8
In Q3 because both ­
360
540
720
270
tan(2x)=sin(2x)/cos(2x)
= ­.6/­.8 = .75
y1=tanx y2= ­3
in degree
s
146 week 12.notebook
November 16, 2016
146 week 12.notebook
November 16, 2016
= cos(2 ) =cos(4pi/11)
#7 Quiz 11
146 week 12.notebook
November 16, 2016
cosx cospi/3-sinxsinpi/3 + cosxcospi/3 +sinx sinpi/3
.5cosx+.5cosx = cosx
6
=sinacosb+cosasinb
cosa = -4/5
solver
cosB=A/H=3/5
sinB=O/H=4/5
146 week 12.notebook
November 16, 2016
Due when we get back
=1.005% decay
exp regression
146 week 12.notebook
November 16, 2016
period=12
146 week 12.notebook
November 16, 2016
y2=32
period: 18
10.2... 19.57...
desire value: 32 period: 18
intersection: 10.2... 19.57....
10.2...+18n
19.57...+18n
Half Angles
146 week 12.notebook
November 16, 2016
146 week 12.notebook
November 16, 2016
146 week 12.notebook
November 16, 2016
indegrees...225 *pi/180=5pi/4
225/180=5/4
315/180= 7/4
sin(3x)
period = 360/3 =120
period=130-10=120
solutions 10, 50
10 + 120n
50 + 120n
unique
146 week 12.notebook
November 16, 2016