jadaann1215 jadaann1215
  • 02-04-2017
  • Mathematics
contestada

Find the value of y.

28.5

22.4

25.8

24.2

Find the value of y 285 224 258 242 class=

Respuesta :

Аноним Аноним
  • 02-04-2017
I hope this helps you




cos75=cos (45+30)


cos45.cos30-sin45.sin30


square root of 2/2.square root of 3/2-square root of 2/2.1/2


square root of 6/4-square root of 2/4


0,61-0,35

0,26


y^2=x^2+z^2-2.x.z.cos75


y^2=25^2+ (10,5)^2-2.25.10,5.0,26


y^2=625+110,25-136,5


y^2=598,75


y~24,4
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