daddyrossof4
daddyrossof4 daddyrossof4
  • 04-07-2017
  • Mathematics
contestada

find the angle,2x, in the wedge shown

find the angle2x in the wedge shown class=

Respuesta :

mathmate
mathmate mathmate
  • 04-07-2017
The problem can be solved using the cosine rule,
where 
cos(A)=(b^2+c^2-a^2)/(2bc)
=(12.5^2+12.5^2-8^2)/(2*12.5*12.5)
=.7952
=> A=2x=37.33 deg. =>
x=18.66 deg.

HOWEVER, since the triangle is isosceles, we can divide it into two right triangles, with short leg=4", and hypotenuse 12.5",  and solve easily by
x=asin(4/12.5)=18.66 degrees
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