Del triangulo rectangulo 4a=4sec ө Perimetro=2+2a Perimetro=2( 1+secө
10
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2010 -I
CICLO REFORZAMIENTO - ADUNI
3
15.
α
S E N
1
ө
α
3-COSα
α
COSα 3 Del triangulo rectángulo que contiene a Tanө=3-cosα senα Operando: Tanө senα =3 -cosα Tanө senα +cosα =3
17. 2
c o s
ө
18.
өrad 2
ө
ө
1 2
ө
n e s
2 senө 2
2 ө
2 c o s ө
2 senө Semiperimetro=ө+1+senө -cosө
11
1 c x o s ө
ө
Por relaciones metricas en el triangulo rectangulose cumple: (1/x)² =(1/senө)² +(1/cosө)² (1/x)² =csc²ө +sec²ө por identidades auxiliares (1/x)² =csc²ө*sec²ө Entoces : x=senө cos ө
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