146 week 12..notebook - MCCCporterr/course/146/documents/146week12_000.pdf146 week 12..notebook...
Transcript of 146 week 12..notebook - MCCCporterr/course/146/documents/146week12_000.pdf146 week 12..notebook...
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146 week 12..notebook April 12, 2017
Agenda
Review Quiz 11
Lecture Double and Half Identities
Lecture Equations
Project
Review Quiz 11
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146 week 12..notebook April 12, 2017
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146 week 12..notebook April 12, 2017
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146 week 12..notebook April 12, 2017
toa=opp/adj
Double Angles Identites
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146 week 12..notebook April 12, 2017
sin(2x) = 2(3)/(10)= .6
cos(2x)=(1/10)(9/10)= .8
Q4:
In Q3 because both
tan(2x)=sin(2x)/cos(2x)
= .6/.8 = .75
y1=tanx y2= 3
in degrees
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146 week 12..notebook April 12, 2017
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146 week 12..notebook April 12, 2017
#7 Quiz 11
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146 week 12..notebook April 12, 2017
cosx cospi/3-sinxsinpi/3 + cosxcospi/3 +sinx sinpi/3
.5cosx+.5cosx = cosx
6
=sinacosb+cosasinb
cosa = -4/5
cosB=A/H=3/5
sinB=O/H=4/5
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146 week 12..notebook April 12, 2017
Half Angles
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146 week 12..notebook April 12, 2017
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146 week 12..notebook April 12, 2017
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146 week 12..notebook April 12, 2017
Solving Trig Equations
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146 week 12..notebook April 12, 2017
sin(3x) = cos(2x)+.1
Due when we get back
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146 week 12..notebook April 12, 2017
period=12
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146 week 12..notebook April 12, 2017
10.2... 19.57...
y2=32
period: 18
desire value: 32 period: 18
intersection: 10.2... 19.57....
10.2...+18n
19.57...+18n
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146 week 12..notebook April 12, 2017