Precalculus Study of Function= job 3 ways to represent...
Transcript of Precalculus Study of Function= job 3 ways to represent...
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146 week 13.notebook November 30, 2016
Precalculus Study of Function= job
3 ways to represent: data, graphs, equations
polynomials/rationals/expon/logs/trigs/
in to out f(2) = evaluate
out from what input = solve (inverse)
Transformed
Applications(compound interest)
Properties ( end behav, zeros, asymptotes, max.mins, inc, dec etc)
Log props and identities of trig things
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146 week 13.notebook November 30, 2016
Today:
Solving Trig Equations
Law of Sines and Cosines (application)
A
B
C
a=corresponding side
to angle Ab
c
law of sines
a = b = c
sinA sin B sin C
AAA= three angles given
30 425
ASAEx
1803042
108
5 = x
sin108 sin42
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146 week 13.notebook November 30, 2016
Ex. ASS
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146 week 13.notebook November 30, 2016
too long= also one solution
A
b
c
SAS
LAW OF COSINES
a2 = b2 + c2 2 *b* c * cos A
a2 =1 + 4 2* 2*cosA
1
2
a26
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146 week 13.notebook November 30, 2016
SSS 3 4
6
32 = 42 + 62 2*4*6cos(A)
AB=36.33
C=18036.3326.38
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146 week 13.notebook November 30, 2016
change 45 degrees to pi/4 radians
calculator in radians
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146 week 13.notebook November 30, 2016
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146 week 13.notebook November 30, 2016
y1= sin(x)1
y2=0
window: xmin:0 xmax:360
calculator in degrees!!!
zoom 0 : zoomfit
calc 5: intersect x3
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146 week 13.notebook November 30, 2016
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