Ley De Senos Y Cosenos

Triangulos semejantes pag. 37
1. 24/8=3
3x8=24m
3x6=18m resp.B
2. 70m/1.5m=46.6m resp.B
3. 40/4=10
10x4=40m
10x3=30m resp.B
Trigonometría. Pag. 38
1. 180°-120°=60°
60°/2=30°resp.A
√3
√3
2. 35(√3)=
35m 35(1.73)60° resp. A
3. cos=cat. Ad./hipo
Cos=1/√2
4. Cont= cat. Ad/cat. Op
Cont=√3/2resp. B
Ley de los senos y cosenos pag.41
1. a2=b2+c2-2bc cos45°
a2=92+42-2(9)(4)(0.707)
a2=97-50.904
a2=46.096
a=√46.096=6.78 resp.B
2. Formuladespeje
c/senC = a/senA a=senA(c/senC)
a=0.7071(30/0.866)
a=24.5 resp.A
3. c2=a2+b2-2ab cos30°
c2=252+152-2(25)(15)(0.866)
c2=850-649.5
c2=200.5c=2000.5=14.16 resp. B



4. Formula despeje
a/senA=b/senB senA=a/b/senB
senA=4/5/0.625
senA=0.5=30° resp.A5. a2=b2+c2-2bcCos60°
a2=32+42-2(3)(4)(0.5)
a2=13
a=13 resp.A
6. Formula despeje
a/senA=b/senBb=senB(a/senA)
b=6/0.7071(o.5)=4.24=32
8. c2=a2+b2-2ab cos60°
c2=62+82-2(6)(8)(0.5)
c2=100-48
c2=52
c= 52 resp.C

Dada una grafica encontrar su ecuación pag. 431. 2(0)+1=1
2(1)+1=3
2(2)+1=5
2(3)+1=7
2(4)+1=9 resp.D
2. 2(1)=2
2(2)=4
2(3)=6 resp.C
3. 12+3=4
32+3=12
52+3=28
72+3=52
92+3=84
112+3=124 resp.C
4. F(x)=3(1)=4F(x)=3(2)=7
F(x)=3(3)=10
F(x)=3(4)=13
F(x)=3(5)=16 resp.C
5. -2+5=3
-4+5=1
-6+5=-1 resp.A
6. F(x)=(1)2+5(1)+4=10
F(x)=(3)2+5(3)+4=28
F(x)=(4)2+5(4)+4=40 resp.B
7. 22(2)-44=0
22(4)-88=022(6)-132=0 resp.C
8. (0)2+2;3(0)+2=2;2
(1)2+2;3(1)+2=3;5
(2)2+2;3(2)+2=6;8
(3)2+2;3(3)+2=11;11
(4)2+2;3(4)+2=18;14
(5)2+2;3(5)+2=27;17
(6)2+2;3(6)+2=38:20
(7)2+2;3(7)+2=51;23 resp.C...